81859560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:339

約数の個数: 128

約数和(自身を含む): 255519360

約数和(自身を除く): 173659800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 53, 60, 61, 106, 120, 122, 159, 183, 211, 212, 244, 265, 305, 318, 366, 422, 424, 488, 530, 610, 633, 636, 732, 795, 844, 915, 1055, 1060, 1220, 1266, 1272, 1464, 1590, 1688, 1830, 2110, 2120, 2440, 2532, 3165, 3180, 3233, 3660, 4220, 5064, 6330, 6360, 6466, 7320, 8440, 9699, 11183, 12660, 12871, 12932, 16165, 19398, 22366, 25320, 25742, 25864, 32330, 33549, 38613, 38796, 44732, 48495, 51484, 55915, 64355, 64660, 67098, 77226, 77592, 89464, 96990, 102968, 111830, 128710, 129320, 134196, 154452, 167745, 193065, 193980, 223660, 257420, 268392, 308904, 335490, 386130, 387960, 447320, 514840, 670980, 682163, 772260, 1341960, 1364326, 1544520, 2046489, 2728652, 3410815, 4092978, 5457304, 6821630, 8185956, 10232445, 13643260, 16371912, 20464890, 27286520, 40929780, 81859560]

約数ペア:

[(1, 81859560), (2, 40929780), (3, 27286520), (4, 20464890), (5, 16371912), (6, 13643260), (8, 10232445), (10, 8185956), (12, 6821630), (15, 5457304), (20, 4092978), (24, 3410815), (30, 2728652), (40, 2046489), (53, 1544520), (60, 1364326), (61, 1341960), (106, 772260), (120, 682163), (122, 670980), (159, 514840), (183, 447320), (211, 387960), (212, 386130), (244, 335490), (265, 308904), (305, 268392), (318, 257420), (366, 223660), (422, 193980), (424, 193065), (488, 167745), (530, 154452), (610, 134196), (633, 129320), (636, 128710), (732, 111830), (795, 102968), (844, 96990), (915, 89464), (1055, 77592), (1060, 77226), (1220, 67098), (1266, 64660), (1272, 64355), (1464, 55915), (1590, 51484), (1688, 48495), (1830, 44732), (2110, 38796), (2120, 38613), (2440, 33549), (2532, 32330), (3165, 25864), (3180, 25742), (3233, 25320), (3660, 22366), (4220, 19398), (5064, 16165), (6330, 12932), (6360, 12871), (6466, 12660), (7320, 11183), (8440, 9699)]