21553960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1093}}^1$

素因数の和:1150

約数の個数: 64

約数和(自身を含む): 53168400

約数和(自身を除く): 31614440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 29, 34, 40, 58, 68, 85, 116, 136, 145, 170, 232, 290, 340, 493, 580, 680, 986, 1093, 1160, 1972, 2186, 2465, 3944, 4372, 4930, 5465, 8744, 9860, 10930, 18581, 19720, 21860, 31697, 37162, 43720, 63394, 74324, 92905, 126788, 148648, 158485, 185810, 253576, 316970, 371620, 538849, 633940, 743240, 1077698, 1267880, 2155396, 2694245, 4310792, 5388490, 10776980, 21553960]

約数ペア:

[(1, 21553960), (2, 10776980), (4, 5388490), (5, 4310792), (8, 2694245), (10, 2155396), (17, 1267880), (20, 1077698), (29, 743240), (34, 633940), (40, 538849), (58, 371620), (68, 316970), (85, 253576), (116, 185810), (136, 158485), (145, 148648), (170, 126788), (232, 92905), (290, 74324), (340, 63394), (493, 43720), (580, 37162), (680, 31697), (986, 21860), (1093, 19720), (1160, 18581), (1972, 10930), (2186, 9860), (2465, 8744), (3944, 5465), (4372, 4930)]