19715240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{367}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 27977560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 79, 85, 136, 158, 170, 316, 340, 367, 395, 632, 680, 734, 790, 1343, 1468, 1580, 1835, 2686, 2936, 3160, 3670, 5372, 6239, 6715, 7340, 10744, 12478, 13430, 14680, 24956, 26860, 28993, 31195, 49912, 53720, 57986, 62390, 115972, 124780, 144965, 231944, 249560, 289930, 492881, 579860, 985762, 1159720, 1971524, 2464405, 3943048, 4928810, 9857620, 19715240]

約数ペア:

[(1, 19715240), (2, 9857620), (4, 4928810), (5, 3943048), (8, 2464405), (10, 1971524), (17, 1159720), (20, 985762), (34, 579860), (40, 492881), (68, 289930), (79, 249560), (85, 231944), (136, 144965), (158, 124780), (170, 115972), (316, 62390), (340, 57986), (367, 53720), (395, 49912), (632, 31195), (680, 28993), (734, 26860), (790, 24956), (1343, 14680), (1468, 13430), (1580, 12478), (1835, 10744), (2686, 7340), (2936, 6715), (3160, 6239), (3670, 5372)]