20557760

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3779}}^1$

素因数の和:3813

約数の個数: 56

約数和(自身を含む): 51846480

約数和(自身を除く): 31288720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3779, 5440, 7558, 15116, 18895, 30232, 37790, 60464, 64243, 75580, 120928, 128486, 151160, 241856, 256972, 302320, 321215, 513944, 604640, 642430, 1027888, 1209280, 1284860, 2055776, 2569720, 4111552, 5139440, 10278880, 20557760]

約数ペア:

[(1, 20557760), (2, 10278880), (4, 5139440), (5, 4111552), (8, 2569720), (10, 2055776), (16, 1284860), (17, 1209280), (20, 1027888), (32, 642430), (34, 604640), (40, 513944), (64, 321215), (68, 302320), (80, 256972), (85, 241856), (136, 151160), (160, 128486), (170, 120928), (272, 75580), (320, 64243), (340, 60464), (544, 37790), (680, 30232), (1088, 18895), (1360, 15116), (2720, 7558), (3779, 5440)]