19836020

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 42977088

約数和(自身を除く): 23141068

約数列:

[1, 2, 4, 5, 10, 20, 67, 113, 131, 134, 226, 262, 268, 335, 452, 524, 565, 655, 670, 1130, 1310, 1340, 2260, 2620, 7571, 8777, 14803, 15142, 17554, 29606, 30284, 35108, 37855, 43885, 59212, 74015, 75710, 87770, 148030, 151420, 175540, 296060, 991801, 1983602, 3967204, 4959005, 9918010, 19836020]

約数ペア:

[(1, 19836020), (2, 9918010), (4, 4959005), (5, 3967204), (10, 1983602), (20, 991801), (67, 296060), (113, 175540), (131, 151420), (134, 148030), (226, 87770), (262, 75710), (268, 74015), (335, 59212), (452, 43885), (524, 37855), (565, 35108), (655, 30284), (670, 29606), (1130, 17554), (1310, 15142), (1340, 14803), (2260, 8777), (2620, 7571)]