8172580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 20035512

約数和(自身を除く): 11862932

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 43, 52, 65, 68, 85, 86, 130, 170, 172, 215, 221, 260, 340, 430, 442, 559, 731, 860, 884, 1105, 1118, 1462, 1849, 2210, 2236, 2795, 2924, 3655, 3698, 4420, 5590, 7310, 7396, 9245, 9503, 11180, 14620, 18490, 19006, 24037, 31433, 36980, 38012, 47515, 48074, 62866, 95030, 96148, 120185, 125732, 157165, 190060, 240370, 314330, 408629, 480740, 628660, 817258, 1634516, 2043145, 4086290, 8172580]

約数ペア:

[(1, 8172580), (2, 4086290), (4, 2043145), (5, 1634516), (10, 817258), (13, 628660), (17, 480740), (20, 408629), (26, 314330), (34, 240370), (43, 190060), (52, 157165), (65, 125732), (68, 120185), (85, 96148), (86, 95030), (130, 62866), (170, 48074), (172, 47515), (215, 38012), (221, 36980), (260, 31433), (340, 24037), (430, 19006), (442, 18490), (559, 14620), (731, 11180), (860, 9503), (884, 9245), (1105, 7396), (1118, 7310), (1462, 5590), (1849, 4420), (2210, 3698), (2236, 3655), (2795, 2924)]