18783830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 19923370

約数列:

[1, 2, 5, 10, 13, 26, 31, 59, 62, 65, 79, 118, 130, 155, 158, 295, 310, 395, 403, 590, 767, 790, 806, 1027, 1534, 1829, 2015, 2054, 2449, 3658, 3835, 4030, 4661, 4898, 5135, 7670, 9145, 9322, 10270, 12245, 18290, 23305, 23777, 24490, 31837, 46610, 47554, 60593, 63674, 118885, 121186, 144491, 159185, 237770, 288982, 302965, 318370, 605930, 722455, 1444910, 1878383, 3756766, 9391915, 18783830]

約数ペア:

[(1, 18783830), (2, 9391915), (5, 3756766), (10, 1878383), (13, 1444910), (26, 722455), (31, 605930), (59, 318370), (62, 302965), (65, 288982), (79, 237770), (118, 159185), (130, 144491), (155, 121186), (158, 118885), (295, 63674), (310, 60593), (395, 47554), (403, 46610), (590, 31837), (767, 24490), (790, 23777), (806, 23305), (1027, 18290), (1534, 12245), (1829, 10270), (2015, 9322), (2054, 9145), (2449, 7670), (3658, 5135), (3835, 4898), (4030, 4661)]