18714800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 120

約数和(自身を含む): 50048880

約数和(自身を除く): 31334080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 59, 61, 65, 80, 100, 104, 118, 122, 130, 200, 208, 236, 244, 260, 295, 305, 325, 400, 472, 488, 520, 590, 610, 650, 767, 793, 944, 976, 1040, 1180, 1220, 1300, 1475, 1525, 1534, 1586, 2360, 2440, 2600, 2950, 3050, 3068, 3172, 3599, 3835, 3965, 4720, 4880, 5200, 5900, 6100, 6136, 6344, 7198, 7670, 7930, 11800, 12200, 12272, 12688, 14396, 15340, 15860, 17995, 19175, 19825, 23600, 24400, 28792, 30680, 31720, 35990, 38350, 39650, 46787, 57584, 61360, 63440, 71980, 76700, 79300, 89975, 93574, 143960, 153400, 158600, 179950, 187148, 233935, 287920, 306800, 317200, 359900, 374296, 467870, 719800, 748592, 935740, 1169675, 1439600, 1871480, 2339350, 3742960, 4678700, 9357400, 18714800]

約数ペア:

[(1, 18714800), (2, 9357400), (4, 4678700), (5, 3742960), (8, 2339350), (10, 1871480), (13, 1439600), (16, 1169675), (20, 935740), (25, 748592), (26, 719800), (40, 467870), (50, 374296), (52, 359900), (59, 317200), (61, 306800), (65, 287920), (80, 233935), (100, 187148), (104, 179950), (118, 158600), (122, 153400), (130, 143960), (200, 93574), (208, 89975), (236, 79300), (244, 76700), (260, 71980), (295, 63440), (305, 61360), (325, 57584), (400, 46787), (472, 39650), (488, 38350), (520, 35990), (590, 31720), (610, 30680), (650, 28792), (767, 24400), (793, 23600), (944, 19825), (976, 19175), (1040, 17995), (1180, 15860), (1220, 15340), (1300, 14396), (1475, 12688), (1525, 12272), (1534, 12200), (1586, 11800), (2360, 7930), (2440, 7670), (2600, 7198), (2950, 6344), (3050, 6136), (3068, 6100), (3172, 5900), (3599, 5200), (3835, 4880), (3965, 4720)]