21662440

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 50673600

約数和(自身を除く): 29011160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 67, 118, 134, 137, 236, 268, 274, 295, 335, 472, 536, 548, 590, 670, 685, 1096, 1180, 1340, 1370, 2360, 2680, 2740, 3953, 5480, 7906, 8083, 9179, 15812, 16166, 18358, 19765, 31624, 32332, 36716, 39530, 40415, 45895, 64664, 73432, 79060, 80830, 91790, 158120, 161660, 183580, 323320, 367160, 541561, 1083122, 2166244, 2707805, 4332488, 5415610, 10831220, 21662440]

約数ペア:

[(1, 21662440), (2, 10831220), (4, 5415610), (5, 4332488), (8, 2707805), (10, 2166244), (20, 1083122), (40, 541561), (59, 367160), (67, 323320), (118, 183580), (134, 161660), (137, 158120), (236, 91790), (268, 80830), (274, 79060), (295, 73432), (335, 64664), (472, 45895), (536, 40415), (548, 39530), (590, 36716), (670, 32332), (685, 31624), (1096, 19765), (1180, 18358), (1340, 16166), (1370, 15812), (2360, 9179), (2680, 8083), (2740, 7906), (3953, 5480)]