87919480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{947}}^1$

素因数の和:1180

約数の個数: 64

約数和(自身を含む): 217054080

約数和(自身を除く): 129134600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 211, 220, 422, 440, 844, 947, 1055, 1688, 1894, 2110, 2321, 3788, 4220, 4642, 4735, 7576, 8440, 9284, 9470, 10417, 11605, 18568, 18940, 20834, 23210, 37880, 41668, 46420, 52085, 83336, 92840, 104170, 199817, 208340, 399634, 416680, 799268, 999085, 1598536, 1998170, 2197987, 3996340, 4395974, 7992680, 8791948, 10989935, 17583896, 21979870, 43959740, 87919480]

約数ペア:

[(1, 87919480), (2, 43959740), (4, 21979870), (5, 17583896), (8, 10989935), (10, 8791948), (11, 7992680), (20, 4395974), (22, 3996340), (40, 2197987), (44, 1998170), (55, 1598536), (88, 999085), (110, 799268), (211, 416680), (220, 399634), (422, 208340), (440, 199817), (844, 104170), (947, 92840), (1055, 83336), (1688, 52085), (1894, 46420), (2110, 41668), (2321, 37880), (3788, 23210), (4220, 20834), (4642, 18940), (4735, 18568), (7576, 11605), (8440, 10417), (9284, 9470)]