20661830

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{283}}^1$

素因数の和:453

約数の個数: 48

約数和(自身を含む): 43707600

約数和(自身を除く): 23045770

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 149, 245, 283, 298, 490, 566, 745, 1043, 1415, 1490, 1981, 2086, 2830, 3962, 5215, 7301, 9905, 10430, 13867, 14602, 19810, 27734, 36505, 42167, 69335, 73010, 84334, 138670, 210835, 295169, 421670, 590338, 1475845, 2066183, 2951690, 4132366, 10330915, 20661830]

約数ペア:

[(1, 20661830), (2, 10330915), (5, 4132366), (7, 2951690), (10, 2066183), (14, 1475845), (35, 590338), (49, 421670), (70, 295169), (98, 210835), (149, 138670), (245, 84334), (283, 73010), (298, 69335), (490, 42167), (566, 36505), (745, 27734), (1043, 19810), (1415, 14602), (1490, 13867), (1981, 10430), (2086, 9905), (2830, 7301), (3962, 5215)]