20275970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1289}}^1$

素因数の和:1331

約数の個数: 48

約数和(自身を含む): 43235640

約数和(自身を除く): 22959670

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 121, 130, 143, 242, 286, 605, 715, 1210, 1289, 1430, 1573, 2578, 3146, 6445, 7865, 12890, 14179, 15730, 16757, 28358, 33514, 70895, 83785, 141790, 155969, 167570, 184327, 311938, 368654, 779845, 921635, 1559690, 1843270, 2027597, 4055194, 10137985, 20275970]

約数ペア:

[(1, 20275970), (2, 10137985), (5, 4055194), (10, 2027597), (11, 1843270), (13, 1559690), (22, 921635), (26, 779845), (55, 368654), (65, 311938), (110, 184327), (121, 167570), (130, 155969), (143, 141790), (242, 83785), (286, 70895), (605, 33514), (715, 28358), (1210, 16757), (1289, 15730), (1430, 14179), (1573, 12890), (2578, 7865), (3146, 6445)]