20915820

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12911}}^1$

素因数の和:12932

約数の個数: 60

約数和(自身を含む): 65618784

約数和(自身を除く): 44702964

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12911, 25822, 38733, 51644, 64555, 77466, 116199, 129110, 154932, 193665, 232398, 258220, 348597, 387330, 464796, 580995, 697194, 774660, 1045791, 1161990, 1394388, 1742985, 2091582, 2323980, 3485970, 4183164, 5228955, 6971940, 10457910, 20915820]

約数ペア:

[(1, 20915820), (2, 10457910), (3, 6971940), (4, 5228955), (5, 4183164), (6, 3485970), (9, 2323980), (10, 2091582), (12, 1742985), (15, 1394388), (18, 1161990), (20, 1045791), (27, 774660), (30, 697194), (36, 580995), (45, 464796), (54, 387330), (60, 348597), (81, 258220), (90, 232398), (108, 193665), (135, 154932), (162, 129110), (180, 116199), (270, 77466), (324, 64555), (405, 51644), (540, 38733), (810, 25822), (1620, 12911)]