79217840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{211}}^1$

素因数の和:275

約数の個数: 120

約数和(自身を含む): 210330288

約数和(自身を除く): 131112448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 211, 247, 260, 304, 361, 380, 422, 494, 520, 722, 760, 844, 988, 1040, 1055, 1235, 1444, 1520, 1688, 1805, 1976, 2110, 2470, 2743, 2888, 3376, 3610, 3952, 4009, 4220, 4693, 4940, 5486, 5776, 7220, 8018, 8440, 9386, 9880, 10972, 13715, 14440, 16036, 16880, 18772, 19760, 20045, 21944, 23465, 27430, 28880, 32072, 37544, 40090, 43888, 46930, 52117, 54860, 64144, 75088, 76171, 80180, 93860, 104234, 109720, 152342, 160360, 187720, 208468, 219440, 260585, 304684, 320720, 375440, 380855, 416936, 521170, 609368, 761710, 833872, 990223, 1042340, 1218736, 1523420, 1980446, 2084680, 3046840, 3960892, 4169360, 4951115, 6093680, 7921784, 9902230, 15843568, 19804460, 39608920, 79217840]

約数ペア:

[(1, 79217840), (2, 39608920), (4, 19804460), (5, 15843568), (8, 9902230), (10, 7921784), (13, 6093680), (16, 4951115), (19, 4169360), (20, 3960892), (26, 3046840), (38, 2084680), (40, 1980446), (52, 1523420), (65, 1218736), (76, 1042340), (80, 990223), (95, 833872), (104, 761710), (130, 609368), (152, 521170), (190, 416936), (208, 380855), (211, 375440), (247, 320720), (260, 304684), (304, 260585), (361, 219440), (380, 208468), (422, 187720), (494, 160360), (520, 152342), (722, 109720), (760, 104234), (844, 93860), (988, 80180), (1040, 76171), (1055, 75088), (1235, 64144), (1444, 54860), (1520, 52117), (1688, 46930), (1805, 43888), (1976, 40090), (2110, 37544), (2470, 32072), (2743, 28880), (2888, 27430), (3376, 23465), (3610, 21944), (3952, 20045), (4009, 19760), (4220, 18772), (4693, 16880), (4940, 16036), (5486, 14440), (5776, 13715), (7220, 10972), (8018, 9880), (8440, 9386)]