17998640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:318

約数の個数: 80

約数和(自身を含む): 46309536

約数和(自身を除く): 28310896

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 113, 176, 181, 220, 226, 362, 440, 452, 565, 724, 880, 904, 905, 1130, 1243, 1448, 1808, 1810, 1991, 2260, 2486, 2896, 3620, 3982, 4520, 4972, 6215, 7240, 7964, 9040, 9944, 9955, 12430, 14480, 15928, 19888, 19910, 20453, 24860, 31856, 39820, 40906, 49720, 79640, 81812, 99440, 102265, 159280, 163624, 204530, 224983, 327248, 409060, 449966, 818120, 899932, 1124915, 1636240, 1799864, 2249830, 3599728, 4499660, 8999320, 17998640]

約数ペア:

[(1, 17998640), (2, 8999320), (4, 4499660), (5, 3599728), (8, 2249830), (10, 1799864), (11, 1636240), (16, 1124915), (20, 899932), (22, 818120), (40, 449966), (44, 409060), (55, 327248), (80, 224983), (88, 204530), (110, 163624), (113, 159280), (176, 102265), (181, 99440), (220, 81812), (226, 79640), (362, 49720), (440, 40906), (452, 39820), (565, 31856), (724, 24860), (880, 20453), (904, 19910), (905, 19888), (1130, 15928), (1243, 14480), (1448, 12430), (1808, 9955), (1810, 9944), (1991, 9040), (2260, 7964), (2486, 7240), (2896, 6215), (3620, 4972), (3982, 4520)]