20980830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2339}}^1$

素因数の和:2385

約数の個数: 64

約数和(自身を含む): 56609280

約数和(自身を除く): 35628450

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 39, 46, 65, 69, 78, 115, 130, 138, 195, 230, 299, 345, 390, 598, 690, 897, 1495, 1794, 2339, 2990, 4485, 4678, 7017, 8970, 11695, 14034, 23390, 30407, 35085, 53797, 60814, 70170, 91221, 107594, 152035, 161391, 182442, 268985, 304070, 322782, 456105, 537970, 699361, 806955, 912210, 1398722, 1613910, 2098083, 3496805, 4196166, 6993610, 10490415, 20980830]

約数ペア:

[(1, 20980830), (2, 10490415), (3, 6993610), (5, 4196166), (6, 3496805), (10, 2098083), (13, 1613910), (15, 1398722), (23, 912210), (26, 806955), (30, 699361), (39, 537970), (46, 456105), (65, 322782), (69, 304070), (78, 268985), (115, 182442), (130, 161391), (138, 152035), (195, 107594), (230, 91221), (299, 70170), (345, 60814), (390, 53797), (598, 35085), (690, 30407), (897, 23390), (1495, 14034), (1794, 11695), (2339, 8970), (2990, 7017), (4485, 4678)]