31999240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 128

約数和(自身を含む): 90720000

約数和(自身を除く): 58720760

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 59, 65, 70, 91, 104, 118, 130, 140, 149, 182, 236, 260, 280, 295, 298, 364, 413, 455, 472, 520, 590, 596, 728, 745, 767, 826, 910, 1043, 1180, 1192, 1490, 1534, 1652, 1820, 1937, 2065, 2086, 2360, 2980, 3068, 3304, 3640, 3835, 3874, 4130, 4172, 5215, 5369, 5960, 6136, 7670, 7748, 8260, 8344, 8791, 9685, 10430, 10738, 13559, 15340, 15496, 16520, 17582, 19370, 20860, 21476, 26845, 27118, 30680, 35164, 38740, 41720, 42952, 43955, 53690, 54236, 61537, 67795, 70328, 77480, 87910, 107380, 108472, 114283, 123074, 135590, 175820, 214760, 228566, 246148, 271180, 307685, 351640, 457132, 492296, 542360, 571415, 615370, 799981, 914264, 1142830, 1230740, 1599962, 2285660, 2461480, 3199924, 3999905, 4571320, 6399848, 7999810, 15999620, 31999240]

約数ペア:

[(1, 31999240), (2, 15999620), (4, 7999810), (5, 6399848), (7, 4571320), (8, 3999905), (10, 3199924), (13, 2461480), (14, 2285660), (20, 1599962), (26, 1230740), (28, 1142830), (35, 914264), (40, 799981), (52, 615370), (56, 571415), (59, 542360), (65, 492296), (70, 457132), (91, 351640), (104, 307685), (118, 271180), (130, 246148), (140, 228566), (149, 214760), (182, 175820), (236, 135590), (260, 123074), (280, 114283), (295, 108472), (298, 107380), (364, 87910), (413, 77480), (455, 70328), (472, 67795), (520, 61537), (590, 54236), (596, 53690), (728, 43955), (745, 42952), (767, 41720), (826, 38740), (910, 35164), (1043, 30680), (1180, 27118), (1192, 26845), (1490, 21476), (1534, 20860), (1652, 19370), (1820, 17582), (1937, 16520), (2065, 15496), (2086, 15340), (2360, 13559), (2980, 10738), (3068, 10430), (3304, 9685), (3640, 8791), (3835, 8344), (3874, 8260), (4130, 7748), (4172, 7670), (5215, 6136), (5369, 5960)]