21680100

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:159

約数の個数: 216

約数和(自身を含む): 78198120

約数和(自身を除く): 56518020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 25, 26, 30, 34, 36, 39, 45, 50, 51, 52, 60, 65, 68, 75, 78, 85, 90, 100, 102, 109, 117, 130, 150, 153, 156, 170, 180, 195, 204, 218, 221, 225, 234, 255, 260, 300, 306, 325, 327, 340, 390, 425, 436, 442, 450, 468, 510, 545, 585, 612, 650, 654, 663, 765, 780, 850, 884, 900, 975, 981, 1020, 1090, 1105, 1170, 1275, 1300, 1308, 1326, 1417, 1530, 1635, 1700, 1853, 1950, 1962, 1989, 2180, 2210, 2340, 2550, 2652, 2725, 2834, 2925, 3060, 3270, 3315, 3706, 3825, 3900, 3924, 3978, 4251, 4420, 4905, 5100, 5450, 5525, 5559, 5668, 5850, 6540, 6630, 7085, 7412, 7650, 7956, 8175, 8502, 9265, 9810, 9945, 10900, 11050, 11118, 11700, 12753, 13260, 14170, 15300, 16350, 16575, 16677, 17004, 18530, 19620, 19890, 21255, 22100, 22236, 24089, 24525, 25506, 27795, 28340, 32700, 33150, 33354, 35425, 37060, 39780, 42510, 46325, 48178, 49050, 49725, 51012, 55590, 63765, 66300, 66708, 70850, 72267, 83385, 85020, 92650, 96356, 98100, 99450, 106275, 111180, 120445, 127530, 138975, 141700, 144534, 166770, 185300, 198900, 212550, 216801, 240890, 255060, 277950, 289068, 318825, 333540, 361335, 416925, 425100, 433602, 481780, 555900, 602225, 637650, 722670, 833850, 867204, 1084005, 1204450, 1275300, 1445340, 1667700, 1806675, 2168010, 2408900, 3613350, 4336020, 5420025, 7226700, 10840050, 21680100]

約数ペア:

[(1, 21680100), (2, 10840050), (3, 7226700), (4, 5420025), (5, 4336020), (6, 3613350), (9, 2408900), (10, 2168010), (12, 1806675), (13, 1667700), (15, 1445340), (17, 1275300), (18, 1204450), (20, 1084005), (25, 867204), (26, 833850), (30, 722670), (34, 637650), (36, 602225), (39, 555900), (45, 481780), (50, 433602), (51, 425100), (52, 416925), (60, 361335), (65, 333540), (68, 318825), (75, 289068), (78, 277950), (85, 255060), (90, 240890), (100, 216801), (102, 212550), (109, 198900), (117, 185300), (130, 166770), (150, 144534), (153, 141700), (156, 138975), (170, 127530), (180, 120445), (195, 111180), (204, 106275), (218, 99450), (221, 98100), (225, 96356), (234, 92650), (255, 85020), (260, 83385), (300, 72267), (306, 70850), (325, 66708), (327, 66300), (340, 63765), (390, 55590), (425, 51012), (436, 49725), (442, 49050), (450, 48178), (468, 46325), (510, 42510), (545, 39780), (585, 37060), (612, 35425), (650, 33354), (654, 33150), (663, 32700), (765, 28340), (780, 27795), (850, 25506), (884, 24525), (900, 24089), (975, 22236), (981, 22100), (1020, 21255), (1090, 19890), (1105, 19620), (1170, 18530), (1275, 17004), (1300, 16677), (1308, 16575), (1326, 16350), (1417, 15300), (1530, 14170), (1635, 13260), (1700, 12753), (1853, 11700), (1950, 11118), (1962, 11050), (1989, 10900), (2180, 9945), (2210, 9810), (2340, 9265), (2550, 8502), (2652, 8175), (2725, 7956), (2834, 7650), (2925, 7412), (3060, 7085), (3270, 6630), (3315, 6540), (3706, 5850), (3825, 5668), (3900, 5559), (3924, 5525), (3978, 5450), (4251, 5100), (4420, 4905)]