280540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1$

素因数の和:118

約数の個数: 36

約数和(自身を含む): 645624

約数和(自身を除く): 365084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 83, 130, 166, 169, 260, 332, 338, 415, 676, 830, 845, 1079, 1660, 1690, 2158, 3380, 4316, 5395, 10790, 14027, 21580, 28054, 56108, 70135, 140270, 280540]

約数ペア:

[(1, 280540), (2, 140270), (4, 70135), (5, 56108), (10, 28054), (13, 21580), (20, 14027), (26, 10790), (52, 5395), (65, 4316), (83, 3380), (130, 2158), (166, 1690), (169, 1660), (260, 1079), (332, 845), (338, 830), (415, 676)]