20574760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{383}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 29191640

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 79, 85, 136, 158, 170, 316, 340, 383, 395, 632, 680, 766, 790, 1343, 1532, 1580, 1915, 2686, 3064, 3160, 3830, 5372, 6511, 6715, 7660, 10744, 13022, 13430, 15320, 26044, 26860, 30257, 32555, 52088, 53720, 60514, 65110, 121028, 130220, 151285, 242056, 260440, 302570, 514369, 605140, 1028738, 1210280, 2057476, 2571845, 4114952, 5143690, 10287380, 20574760]

約数ペア:

[(1, 20574760), (2, 10287380), (4, 5143690), (5, 4114952), (8, 2571845), (10, 2057476), (17, 1210280), (20, 1028738), (34, 605140), (40, 514369), (68, 302570), (79, 260440), (85, 242056), (136, 151285), (158, 130220), (170, 121028), (316, 65110), (340, 60514), (383, 53720), (395, 52088), (632, 32555), (680, 30257), (766, 26860), (790, 26044), (1343, 15320), (1532, 13430), (1580, 13022), (1915, 10744), (2686, 7660), (3064, 6715), (3160, 6511), (3830, 5372)]