637981240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2083}}^1$

素因数の和:2157

約数の個数: 128

約数和(自身を含む): 1680537600

約数和(自身を除く): 1042556360

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 31, 38, 40, 52, 62, 65, 76, 95, 104, 124, 130, 152, 155, 190, 247, 248, 260, 310, 380, 403, 494, 520, 589, 620, 760, 806, 988, 1178, 1235, 1240, 1612, 1976, 2015, 2083, 2356, 2470, 2945, 3224, 4030, 4166, 4712, 4940, 5890, 7657, 8060, 8332, 9880, 10415, 11780, 15314, 16120, 16664, 20830, 23560, 27079, 30628, 38285, 39577, 41660, 54158, 61256, 64573, 76570, 79154, 83320, 108316, 129146, 135395, 153140, 158308, 197885, 216632, 258292, 270790, 306280, 316616, 322865, 395770, 514501, 516584, 541580, 645730, 791540, 839449, 1029002, 1083160, 1226887, 1291460, 1583080, 1678898, 2058004, 2453774, 2572505, 2582920, 3357796, 4116008, 4197245, 4907548, 5145010, 6134435, 6715592, 8394490, 9815096, 10290020, 12268870, 15949531, 16788980, 20580040, 24537740, 31899062, 33577960, 49075480, 63798124, 79747655, 127596248, 159495310, 318990620, 637981240]

約数ペア:

[(1, 637981240), (2, 318990620), (4, 159495310), (5, 127596248), (8, 79747655), (10, 63798124), (13, 49075480), (19, 33577960), (20, 31899062), (26, 24537740), (31, 20580040), (38, 16788980), (40, 15949531), (52, 12268870), (62, 10290020), (65, 9815096), (76, 8394490), (95, 6715592), (104, 6134435), (124, 5145010), (130, 4907548), (152, 4197245), (155, 4116008), (190, 3357796), (247, 2582920), (248, 2572505), (260, 2453774), (310, 2058004), (380, 1678898), (403, 1583080), (494, 1291460), (520, 1226887), (589, 1083160), (620, 1029002), (760, 839449), (806, 791540), (988, 645730), (1178, 541580), (1235, 516584), (1240, 514501), (1612, 395770), (1976, 322865), (2015, 316616), (2083, 306280), (2356, 270790), (2470, 258292), (2945, 216632), (3224, 197885), (4030, 158308), (4166, 153140), (4712, 135395), (4940, 129146), (5890, 108316), (7657, 83320), (8060, 79154), (8332, 76570), (9880, 64573), (10415, 61256), (11780, 54158), (15314, 41660), (16120, 39577), (16664, 38285), (20830, 30628), (23560, 27079)]