20970490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 41175432

約数和(自身を除く): 20204942

約数列:

[1, 2, 5, 10, 19, 37, 38, 74, 95, 157, 185, 190, 314, 361, 370, 703, 722, 785, 1406, 1570, 1805, 2983, 3515, 3610, 5809, 5966, 7030, 11618, 13357, 14915, 26714, 29045, 29830, 56677, 58090, 66785, 110371, 113354, 133570, 220742, 283385, 551855, 566770, 1103710, 2097049, 4194098, 10485245, 20970490]

約数ペア:

[(1, 20970490), (2, 10485245), (5, 4194098), (10, 2097049), (19, 1103710), (37, 566770), (38, 551855), (74, 283385), (95, 220742), (157, 133570), (185, 113354), (190, 110371), (314, 66785), (361, 58090), (370, 56677), (703, 29830), (722, 29045), (785, 26714), (1406, 14915), (1570, 13357), (1805, 11618), (2983, 7030), (3515, 5966), (3610, 5809)]