78904280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:493

約数の個数: 128

約数和(自身を含む): 223171200

約数和(自身を除く): 144266920

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 53, 56, 65, 70, 91, 104, 106, 130, 140, 182, 212, 260, 265, 280, 364, 371, 409, 424, 455, 520, 530, 689, 728, 742, 818, 910, 1060, 1378, 1484, 1636, 1820, 1855, 2045, 2120, 2756, 2863, 2968, 3272, 3445, 3640, 3710, 4090, 4823, 5317, 5512, 5726, 6890, 7420, 8180, 9646, 10634, 11452, 13780, 14315, 14840, 16360, 19292, 21268, 21677, 22904, 24115, 26585, 27560, 28630, 37219, 38584, 42536, 43354, 48230, 53170, 57260, 74438, 86708, 96460, 106340, 108385, 114520, 148876, 151739, 173416, 186095, 192920, 212680, 216770, 281801, 297752, 303478, 372190, 433540, 563602, 606956, 744380, 758695, 867080, 1127204, 1213912, 1409005, 1488760, 1517390, 1972607, 2254408, 2818010, 3034780, 3945214, 5636020, 6069560, 7890428, 9863035, 11272040, 15780856, 19726070, 39452140, 78904280]

約数ペア:

[(1, 78904280), (2, 39452140), (4, 19726070), (5, 15780856), (7, 11272040), (8, 9863035), (10, 7890428), (13, 6069560), (14, 5636020), (20, 3945214), (26, 3034780), (28, 2818010), (35, 2254408), (40, 1972607), (52, 1517390), (53, 1488760), (56, 1409005), (65, 1213912), (70, 1127204), (91, 867080), (104, 758695), (106, 744380), (130, 606956), (140, 563602), (182, 433540), (212, 372190), (260, 303478), (265, 297752), (280, 281801), (364, 216770), (371, 212680), (409, 192920), (424, 186095), (455, 173416), (520, 151739), (530, 148876), (689, 114520), (728, 108385), (742, 106340), (818, 96460), (910, 86708), (1060, 74438), (1378, 57260), (1484, 53170), (1636, 48230), (1820, 43354), (1855, 42536), (2045, 38584), (2120, 37219), (2756, 28630), (2863, 27560), (2968, 26585), (3272, 24115), (3445, 22904), (3640, 21677), (3710, 21268), (4090, 19292), (4823, 16360), (5317, 14840), (5512, 14315), (5726, 13780), (6890, 11452), (7420, 10634), (8180, 9646)]