19920680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1321}}^1$

素因数の和:1374

約数の個数: 64

約数和(自身を含む): 49971600

約数和(自身を除く): 30050920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 40, 52, 58, 65, 104, 116, 130, 145, 232, 260, 290, 377, 520, 580, 754, 1160, 1321, 1508, 1885, 2642, 3016, 3770, 5284, 6605, 7540, 10568, 13210, 15080, 17173, 26420, 34346, 38309, 52840, 68692, 76618, 85865, 137384, 153236, 171730, 191545, 306472, 343460, 383090, 498017, 686920, 766180, 996034, 1532360, 1992068, 2490085, 3984136, 4980170, 9960340, 19920680]

約数ペア:

[(1, 19920680), (2, 9960340), (4, 4980170), (5, 3984136), (8, 2490085), (10, 1992068), (13, 1532360), (20, 996034), (26, 766180), (29, 686920), (40, 498017), (52, 383090), (58, 343460), (65, 306472), (104, 191545), (116, 171730), (130, 153236), (145, 137384), (232, 85865), (260, 76618), (290, 68692), (377, 52840), (520, 38309), (580, 34346), (754, 26420), (1160, 17173), (1321, 15080), (1508, 13210), (1885, 10568), (2642, 7540), (3016, 6605), (3770, 5284)]