81275920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4861}}^1$

素因数の和:4904

約数の個数: 80

約数和(自身を含む): 217039680

約数和(自身を除く): 135763760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1520, 1672, 2090, 3344, 4180, 4861, 8360, 9722, 16720, 19444, 24305, 38888, 48610, 53471, 77776, 92359, 97220, 106942, 184718, 194440, 213884, 267355, 369436, 388880, 427768, 461795, 534710, 738872, 855536, 923590, 1015949, 1069420, 1477744, 1847180, 2031898, 2138840, 3694360, 4063796, 4277680, 5079745, 7388720, 8127592, 10159490, 16255184, 20318980, 40637960, 81275920]

約数ペア:

[(1, 81275920), (2, 40637960), (4, 20318980), (5, 16255184), (8, 10159490), (10, 8127592), (11, 7388720), (16, 5079745), (19, 4277680), (20, 4063796), (22, 3694360), (38, 2138840), (40, 2031898), (44, 1847180), (55, 1477744), (76, 1069420), (80, 1015949), (88, 923590), (95, 855536), (110, 738872), (152, 534710), (176, 461795), (190, 427768), (209, 388880), (220, 369436), (304, 267355), (380, 213884), (418, 194440), (440, 184718), (760, 106942), (836, 97220), (880, 92359), (1045, 77776), (1520, 53471), (1672, 48610), (2090, 38888), (3344, 24305), (4180, 19444), (4861, 16720), (8360, 9722)]