21916080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:579

約数の個数: 120

約数和(自身を含む): 74958000

約数和(自身を除く): 53041920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 488, 499, 549, 610, 720, 732, 915, 976, 998, 1098, 1220, 1464, 1497, 1830, 1996, 2196, 2440, 2495, 2745, 2928, 2994, 3660, 3992, 4392, 4491, 4880, 4990, 5490, 5988, 7320, 7485, 7984, 8784, 8982, 9980, 10980, 11976, 14640, 14970, 17964, 19960, 21960, 22455, 23952, 29940, 30439, 35928, 39920, 43920, 44910, 59880, 60878, 71856, 89820, 91317, 119760, 121756, 152195, 179640, 182634, 243512, 273951, 304390, 359280, 365268, 456585, 487024, 547902, 608780, 730536, 913170, 1095804, 1217560, 1369755, 1461072, 1826340, 2191608, 2435120, 2739510, 3652680, 4383216, 5479020, 7305360, 10958040, 21916080]

約数ペア:

[(1, 21916080), (2, 10958040), (3, 7305360), (4, 5479020), (5, 4383216), (6, 3652680), (8, 2739510), (9, 2435120), (10, 2191608), (12, 1826340), (15, 1461072), (16, 1369755), (18, 1217560), (20, 1095804), (24, 913170), (30, 730536), (36, 608780), (40, 547902), (45, 487024), (48, 456585), (60, 365268), (61, 359280), (72, 304390), (80, 273951), (90, 243512), (120, 182634), (122, 179640), (144, 152195), (180, 121756), (183, 119760), (240, 91317), (244, 89820), (305, 71856), (360, 60878), (366, 59880), (488, 44910), (499, 43920), (549, 39920), (610, 35928), (720, 30439), (732, 29940), (915, 23952), (976, 22455), (998, 21960), (1098, 19960), (1220, 17964), (1464, 14970), (1497, 14640), (1830, 11976), (1996, 10980), (2196, 9980), (2440, 8982), (2495, 8784), (2745, 7984), (2928, 7485), (2994, 7320), (3660, 5988), (3992, 5490), (4392, 4990), (4491, 4880)]