21312900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:243

約数の個数: 216

約数和(自身を含む): 81244800

約数和(自身を除く): 59931900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 25, 28, 30, 34, 35, 36, 42, 45, 50, 51, 60, 63, 68, 70, 75, 84, 85, 90, 100, 102, 105, 119, 126, 140, 150, 153, 170, 175, 180, 199, 204, 210, 225, 238, 252, 255, 300, 306, 315, 340, 350, 357, 398, 420, 425, 450, 476, 510, 525, 595, 597, 612, 630, 700, 714, 765, 796, 850, 900, 995, 1020, 1050, 1071, 1190, 1194, 1260, 1275, 1393, 1428, 1530, 1575, 1700, 1785, 1791, 1990, 2100, 2142, 2380, 2388, 2550, 2786, 2975, 2985, 3060, 3150, 3383, 3570, 3582, 3825, 3980, 4179, 4284, 4975, 5100, 5355, 5572, 5950, 5970, 6300, 6766, 6965, 7140, 7164, 7650, 8358, 8925, 8955, 9950, 10149, 10710, 11900, 11940, 12537, 13532, 13930, 14925, 15300, 16716, 16915, 17850, 17910, 19900, 20298, 20895, 21420, 23681, 25074, 26775, 27860, 29850, 30447, 33830, 34825, 35700, 35820, 40596, 41790, 44775, 47362, 50148, 50745, 53550, 59700, 60894, 62685, 67660, 69650, 71043, 83580, 84575, 89550, 94724, 101490, 104475, 107100, 118405, 121788, 125370, 139300, 142086, 152235, 169150, 179100, 202980, 208950, 213129, 236810, 250740, 253725, 284172, 304470, 313425, 338300, 355215, 417900, 426258, 473620, 507450, 592025, 608940, 626850, 710430, 761175, 852516, 1014900, 1065645, 1184050, 1253700, 1420860, 1522350, 1776075, 2131290, 2368100, 3044700, 3552150, 4262580, 5328225, 7104300, 10656450, 21312900]

約数ペア:

[(1, 21312900), (2, 10656450), (3, 7104300), (4, 5328225), (5, 4262580), (6, 3552150), (7, 3044700), (9, 2368100), (10, 2131290), (12, 1776075), (14, 1522350), (15, 1420860), (17, 1253700), (18, 1184050), (20, 1065645), (21, 1014900), (25, 852516), (28, 761175), (30, 710430), (34, 626850), (35, 608940), (36, 592025), (42, 507450), (45, 473620), (50, 426258), (51, 417900), (60, 355215), (63, 338300), (68, 313425), (70, 304470), (75, 284172), (84, 253725), (85, 250740), (90, 236810), (100, 213129), (102, 208950), (105, 202980), (119, 179100), (126, 169150), (140, 152235), (150, 142086), (153, 139300), (170, 125370), (175, 121788), (180, 118405), (199, 107100), (204, 104475), (210, 101490), (225, 94724), (238, 89550), (252, 84575), (255, 83580), (300, 71043), (306, 69650), (315, 67660), (340, 62685), (350, 60894), (357, 59700), (398, 53550), (420, 50745), (425, 50148), (450, 47362), (476, 44775), (510, 41790), (525, 40596), (595, 35820), (597, 35700), (612, 34825), (630, 33830), (700, 30447), (714, 29850), (765, 27860), (796, 26775), (850, 25074), (900, 23681), (995, 21420), (1020, 20895), (1050, 20298), (1071, 19900), (1190, 17910), (1194, 17850), (1260, 16915), (1275, 16716), (1393, 15300), (1428, 14925), (1530, 13930), (1575, 13532), (1700, 12537), (1785, 11940), (1791, 11900), (1990, 10710), (2100, 10149), (2142, 9950), (2380, 8955), (2388, 8925), (2550, 8358), (2786, 7650), (2975, 7164), (2985, 7140), (3060, 6965), (3150, 6766), (3383, 6300), (3570, 5970), (3582, 5950), (3825, 5572), (3980, 5355), (4179, 5100), (4284, 4975)]