20999280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1483}}^1$

素因数の和:1558

約数の個数: 80

約数和(自身を含む): 66245760

約数和(自身を除く): 45246480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 59, 60, 80, 118, 120, 177, 236, 240, 295, 354, 472, 590, 708, 885, 944, 1180, 1416, 1483, 1770, 2360, 2832, 2966, 3540, 4449, 4720, 5932, 7080, 7415, 8898, 11864, 14160, 14830, 17796, 22245, 23728, 29660, 35592, 44490, 59320, 71184, 87497, 88980, 118640, 174994, 177960, 262491, 349988, 355920, 437485, 524982, 699976, 874970, 1049964, 1312455, 1399952, 1749940, 2099928, 2624910, 3499880, 4199856, 5249820, 6999760, 10499640, 20999280]

約数ペア:

[(1, 20999280), (2, 10499640), (3, 6999760), (4, 5249820), (5, 4199856), (6, 3499880), (8, 2624910), (10, 2099928), (12, 1749940), (15, 1399952), (16, 1312455), (20, 1049964), (24, 874970), (30, 699976), (40, 524982), (48, 437485), (59, 355920), (60, 349988), (80, 262491), (118, 177960), (120, 174994), (177, 118640), (236, 88980), (240, 87497), (295, 71184), (354, 59320), (472, 44490), (590, 35592), (708, 29660), (885, 23728), (944, 22245), (1180, 17796), (1416, 14830), (1483, 14160), (1770, 11864), (2360, 8898), (2832, 7415), (2966, 7080), (3540, 5932), (4449, 4720)]