81681080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:361

約数の個数: 96

約数和(自身を含む): 204359760

約数和(自身を除く): 122678680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 169, 172, 215, 260, 281, 338, 344, 430, 520, 559, 562, 676, 845, 860, 1118, 1124, 1352, 1405, 1690, 1720, 2236, 2248, 2795, 2810, 3380, 3653, 4472, 5590, 5620, 6760, 7267, 7306, 11180, 11240, 12083, 14534, 14612, 18265, 22360, 24166, 29068, 29224, 36335, 36530, 47489, 48332, 58136, 60415, 72670, 73060, 94978, 96664, 120830, 145340, 146120, 157079, 189956, 237445, 241660, 290680, 314158, 379912, 474890, 483320, 628316, 785395, 949780, 1256632, 1570790, 1899560, 2042027, 3141580, 4084054, 6283160, 8168108, 10210135, 16336216, 20420270, 40840540, 81681080]

約数ペア:

[(1, 81681080), (2, 40840540), (4, 20420270), (5, 16336216), (8, 10210135), (10, 8168108), (13, 6283160), (20, 4084054), (26, 3141580), (40, 2042027), (43, 1899560), (52, 1570790), (65, 1256632), (86, 949780), (104, 785395), (130, 628316), (169, 483320), (172, 474890), (215, 379912), (260, 314158), (281, 290680), (338, 241660), (344, 237445), (430, 189956), (520, 157079), (559, 146120), (562, 145340), (676, 120830), (845, 96664), (860, 94978), (1118, 73060), (1124, 72670), (1352, 60415), (1405, 58136), (1690, 48332), (1720, 47489), (2236, 36530), (2248, 36335), (2795, 29224), (2810, 29068), (3380, 24166), (3653, 22360), (4472, 18265), (5590, 14612), (5620, 14534), (6760, 12083), (7267, 11240), (7306, 11180)]