18716880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{857}}^1$

素因数の和:893

約数の個数: 160

約数和(自身を含む): 71495424

約数和(自身を除く): 52778544

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 857, 910, 1040, 1092, 1365, 1456, 1560, 1680, 1714, 1820, 2184, 2571, 2730, 3120, 3428, 3640, 4285, 4368, 5142, 5460, 5999, 6856, 7280, 8570, 10284, 10920, 11141, 11998, 12855, 13712, 17140, 17997, 20568, 21840, 22282, 23996, 25710, 29995, 33423, 34280, 35994, 41136, 44564, 47992, 51420, 55705, 59990, 66846, 68560, 71988, 77987, 89128, 89985, 95984, 102840, 111410, 119980, 133692, 143976, 155974, 167115, 178256, 179970, 205680, 222820, 233961, 239960, 267384, 287952, 311948, 334230, 359940, 389935, 445640, 467922, 479920, 534768, 623896, 668460, 719880, 779870, 891280, 935844, 1169805, 1247792, 1336920, 1439760, 1559740, 1871688, 2339610, 2673840, 3119480, 3743376, 4679220, 6238960, 9358440, 18716880]

約数ペア:

[(1, 18716880), (2, 9358440), (3, 6238960), (4, 4679220), (5, 3743376), (6, 3119480), (7, 2673840), (8, 2339610), (10, 1871688), (12, 1559740), (13, 1439760), (14, 1336920), (15, 1247792), (16, 1169805), (20, 935844), (21, 891280), (24, 779870), (26, 719880), (28, 668460), (30, 623896), (35, 534768), (39, 479920), (40, 467922), (42, 445640), (48, 389935), (52, 359940), (56, 334230), (60, 311948), (65, 287952), (70, 267384), (78, 239960), (80, 233961), (84, 222820), (91, 205680), (104, 179970), (105, 178256), (112, 167115), (120, 155974), (130, 143976), (140, 133692), (156, 119980), (168, 111410), (182, 102840), (195, 95984), (208, 89985), (210, 89128), (240, 77987), (260, 71988), (273, 68560), (280, 66846), (312, 59990), (336, 55705), (364, 51420), (390, 47992), (420, 44564), (455, 41136), (520, 35994), (546, 34280), (560, 33423), (624, 29995), (728, 25710), (780, 23996), (840, 22282), (857, 21840), (910, 20568), (1040, 17997), (1092, 17140), (1365, 13712), (1456, 12855), (1560, 11998), (1680, 11141), (1714, 10920), (1820, 10284), (2184, 8570), (2571, 7280), (2730, 6856), (3120, 5999), (3428, 5460), (3640, 5142), (4285, 4368)]