21726040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2503}}^1$

素因数の和:2552

約数の個数: 64

約数和(自身を含む): 57692160

約数和(自身を除く): 35966120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2503, 4340, 5006, 8680, 10012, 12515, 17521, 20024, 25030, 35042, 50060, 70084, 77593, 87605, 100120, 140168, 155186, 175210, 310372, 350420, 387965, 543151, 620744, 700840, 775930, 1086302, 1551860, 2172604, 2715755, 3103720, 4345208, 5431510, 10863020, 21726040]

約数ペア:

[(1, 21726040), (2, 10863020), (4, 5431510), (5, 4345208), (7, 3103720), (8, 2715755), (10, 2172604), (14, 1551860), (20, 1086302), (28, 775930), (31, 700840), (35, 620744), (40, 543151), (56, 387965), (62, 350420), (70, 310372), (124, 175210), (140, 155186), (155, 140168), (217, 100120), (248, 87605), (280, 77593), (310, 70084), (434, 50060), (620, 35042), (868, 25030), (1085, 20024), (1240, 17521), (1736, 12515), (2170, 10012), (2503, 8680), (4340, 5006)]