21202740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:99

約数の個数: 216

約数和(自身を含む): 75538008

約数和(自身を除く): 54335268

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 30, 34, 36, 39, 41, 45, 51, 52, 60, 65, 68, 78, 82, 85, 90, 102, 117, 123, 130, 153, 156, 164, 169, 170, 180, 195, 204, 205, 221, 234, 246, 255, 260, 306, 338, 340, 369, 390, 410, 442, 468, 492, 507, 510, 533, 585, 612, 615, 663, 676, 697, 738, 765, 780, 820, 845, 884, 1014, 1020, 1066, 1105, 1170, 1230, 1326, 1394, 1476, 1521, 1530, 1599, 1690, 1845, 1989, 2028, 2091, 2132, 2210, 2340, 2460, 2535, 2652, 2665, 2788, 2873, 3042, 3060, 3198, 3315, 3380, 3485, 3690, 3978, 4182, 4420, 4797, 5070, 5330, 5746, 6084, 6273, 6396, 6630, 6929, 6970, 7380, 7605, 7956, 7995, 8364, 8619, 9061, 9594, 9945, 10140, 10455, 10660, 11492, 12546, 13260, 13858, 13940, 14365, 15210, 15990, 17238, 18122, 19188, 19890, 20787, 20910, 23985, 25092, 25857, 27183, 27716, 28730, 30420, 31365, 31980, 34476, 34645, 36244, 39780, 41574, 41820, 43095, 45305, 47970, 51714, 54366, 57460, 62361, 62730, 69290, 81549, 83148, 86190, 90610, 95940, 103428, 103935, 108732, 117793, 124722, 125460, 129285, 135915, 138580, 163098, 172380, 181220, 207870, 235586, 249444, 258570, 271830, 311805, 326196, 353379, 407745, 415740, 471172, 517140, 543660, 588965, 623610, 706758, 815490, 1060137, 1177930, 1247220, 1413516, 1630980, 1766895, 2120274, 2355860, 3533790, 4240548, 5300685, 7067580, 10601370, 21202740]

約数ペア:

[(1, 21202740), (2, 10601370), (3, 7067580), (4, 5300685), (5, 4240548), (6, 3533790), (9, 2355860), (10, 2120274), (12, 1766895), (13, 1630980), (15, 1413516), (17, 1247220), (18, 1177930), (20, 1060137), (26, 815490), (30, 706758), (34, 623610), (36, 588965), (39, 543660), (41, 517140), (45, 471172), (51, 415740), (52, 407745), (60, 353379), (65, 326196), (68, 311805), (78, 271830), (82, 258570), (85, 249444), (90, 235586), (102, 207870), (117, 181220), (123, 172380), (130, 163098), (153, 138580), (156, 135915), (164, 129285), (169, 125460), (170, 124722), (180, 117793), (195, 108732), (204, 103935), (205, 103428), (221, 95940), (234, 90610), (246, 86190), (255, 83148), (260, 81549), (306, 69290), (338, 62730), (340, 62361), (369, 57460), (390, 54366), (410, 51714), (442, 47970), (468, 45305), (492, 43095), (507, 41820), (510, 41574), (533, 39780), (585, 36244), (612, 34645), (615, 34476), (663, 31980), (676, 31365), (697, 30420), (738, 28730), (765, 27716), (780, 27183), (820, 25857), (845, 25092), (884, 23985), (1014, 20910), (1020, 20787), (1066, 19890), (1105, 19188), (1170, 18122), (1230, 17238), (1326, 15990), (1394, 15210), (1476, 14365), (1521, 13940), (1530, 13858), (1599, 13260), (1690, 12546), (1845, 11492), (1989, 10660), (2028, 10455), (2091, 10140), (2132, 9945), (2210, 9594), (2340, 9061), (2460, 8619), (2535, 8364), (2652, 7995), (2665, 7956), (2788, 7605), (2873, 7380), (3042, 6970), (3060, 6929), (3198, 6630), (3315, 6396), (3380, 6273), (3485, 6084), (3690, 5746), (3978, 5330), (4182, 5070), (4420, 4797)]