40840540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:359

約数の個数: 72

約数和(自身を含む): 95367888

約数和(自身を除く): 54527348

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 215, 260, 281, 338, 430, 559, 562, 676, 845, 860, 1118, 1124, 1405, 1690, 2236, 2795, 2810, 3380, 3653, 5590, 5620, 7267, 7306, 11180, 12083, 14534, 14612, 18265, 24166, 29068, 36335, 36530, 47489, 48332, 60415, 72670, 73060, 94978, 120830, 145340, 157079, 189956, 237445, 241660, 314158, 474890, 628316, 785395, 949780, 1570790, 2042027, 3141580, 4084054, 8168108, 10210135, 20420270, 40840540]

約数ペア:

[(1, 40840540), (2, 20420270), (4, 10210135), (5, 8168108), (10, 4084054), (13, 3141580), (20, 2042027), (26, 1570790), (43, 949780), (52, 785395), (65, 628316), (86, 474890), (130, 314158), (169, 241660), (172, 237445), (215, 189956), (260, 157079), (281, 145340), (338, 120830), (430, 94978), (559, 73060), (562, 72670), (676, 60415), (845, 48332), (860, 47489), (1118, 36530), (1124, 36335), (1405, 29068), (1690, 24166), (2236, 18265), (2795, 14612), (2810, 14534), (3380, 12083), (3653, 11180), (5590, 7306), (5620, 7267)]