21307360

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:240

約数の個数: 96

約数和(自身を含む): 54552960

約数和(自身を除く): 33245600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 43, 76, 80, 86, 95, 152, 160, 163, 172, 190, 215, 304, 326, 344, 380, 430, 608, 652, 688, 760, 815, 817, 860, 1304, 1376, 1520, 1630, 1634, 1720, 2608, 3040, 3097, 3260, 3268, 3440, 4085, 5216, 6194, 6520, 6536, 6880, 7009, 8170, 12388, 13040, 13072, 14018, 15485, 16340, 24776, 26080, 26144, 28036, 30970, 32680, 35045, 49552, 56072, 61940, 65360, 70090, 99104, 112144, 123880, 130720, 133171, 140180, 224288, 247760, 266342, 280360, 495520, 532684, 560720, 665855, 1065368, 1121440, 1331710, 2130736, 2663420, 4261472, 5326840, 10653680, 21307360]

約数ペア:

[(1, 21307360), (2, 10653680), (4, 5326840), (5, 4261472), (8, 2663420), (10, 2130736), (16, 1331710), (19, 1121440), (20, 1065368), (32, 665855), (38, 560720), (40, 532684), (43, 495520), (76, 280360), (80, 266342), (86, 247760), (95, 224288), (152, 140180), (160, 133171), (163, 130720), (172, 123880), (190, 112144), (215, 99104), (304, 70090), (326, 65360), (344, 61940), (380, 56072), (430, 49552), (608, 35045), (652, 32680), (688, 30970), (760, 28036), (815, 26144), (817, 26080), (860, 24776), (1304, 16340), (1376, 15485), (1520, 14018), (1630, 13072), (1634, 13040), (1720, 12388), (2608, 8170), (3040, 7009), (3097, 6880), (3260, 6536), (3268, 6520), (3440, 6194), (4085, 5216)]