401525020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{1607}}^1$

素因数の和:1691

約数の個数: 72

約数和(自身を含む): 938885472

約数和(自身を除く): 537360452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 961, 1607, 1612, 1922, 2015, 3214, 3844, 4030, 4805, 6428, 8035, 8060, 9610, 12493, 16070, 19220, 20891, 24986, 32140, 41782, 49817, 49972, 62465, 83564, 99634, 104455, 124930, 199268, 208910, 249085, 249860, 417820, 498170, 647621, 996340, 1295242, 1544327, 2590484, 3088654, 3238105, 6177308, 6476210, 7721635, 12952420, 15443270, 20076251, 30886540, 40152502, 80305004, 100381255, 200762510, 401525020]

約数ペア:

[(1, 401525020), (2, 200762510), (4, 100381255), (5, 80305004), (10, 40152502), (13, 30886540), (20, 20076251), (26, 15443270), (31, 12952420), (52, 7721635), (62, 6476210), (65, 6177308), (124, 3238105), (130, 3088654), (155, 2590484), (260, 1544327), (310, 1295242), (403, 996340), (620, 647621), (806, 498170), (961, 417820), (1607, 249860), (1612, 249085), (1922, 208910), (2015, 199268), (3214, 124930), (3844, 104455), (4030, 99634), (4805, 83564), (6428, 62465), (8035, 49972), (8060, 49817), (9610, 41782), (12493, 32140), (16070, 24986), (19220, 20891)]