31497960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:419

約数の個数: 128

約数和(自身を含む): 103743360

約数和(自身を除く): 72245400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 61, 65, 78, 104, 120, 122, 130, 156, 183, 195, 244, 260, 305, 312, 331, 366, 390, 488, 520, 610, 662, 732, 780, 793, 915, 993, 1220, 1324, 1464, 1560, 1586, 1655, 1830, 1986, 2379, 2440, 2648, 3172, 3310, 3660, 3965, 3972, 4303, 4758, 4965, 6344, 6620, 7320, 7930, 7944, 8606, 9516, 9930, 11895, 12909, 13240, 15860, 17212, 19032, 19860, 20191, 21515, 23790, 25818, 31720, 34424, 39720, 40382, 43030, 47580, 51636, 60573, 64545, 80764, 86060, 95160, 100955, 103272, 121146, 129090, 161528, 172120, 201910, 242292, 258180, 262483, 302865, 403820, 484584, 516360, 524966, 605730, 787449, 807640, 1049932, 1211460, 1312415, 1574898, 2099864, 2422920, 2624830, 3149796, 3937245, 5249660, 6299592, 7874490, 10499320, 15748980, 31497960]

約数ペア:

[(1, 31497960), (2, 15748980), (3, 10499320), (4, 7874490), (5, 6299592), (6, 5249660), (8, 3937245), (10, 3149796), (12, 2624830), (13, 2422920), (15, 2099864), (20, 1574898), (24, 1312415), (26, 1211460), (30, 1049932), (39, 807640), (40, 787449), (52, 605730), (60, 524966), (61, 516360), (65, 484584), (78, 403820), (104, 302865), (120, 262483), (122, 258180), (130, 242292), (156, 201910), (183, 172120), (195, 161528), (244, 129090), (260, 121146), (305, 103272), (312, 100955), (331, 95160), (366, 86060), (390, 80764), (488, 64545), (520, 60573), (610, 51636), (662, 47580), (732, 43030), (780, 40382), (793, 39720), (915, 34424), (993, 31720), (1220, 25818), (1324, 23790), (1464, 21515), (1560, 20191), (1586, 19860), (1655, 19032), (1830, 17212), (1986, 15860), (2379, 13240), (2440, 12909), (2648, 11895), (3172, 9930), (3310, 9516), (3660, 8606), (3965, 7944), (3972, 7930), (4303, 7320), (4758, 6620), (4965, 6344)]