19861390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{811}}^1$

素因数の和:928

約数の個数: 32

約数和(自身を含む): 37416960

約数和(自身を除く): 17555570

約数列:

[1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 790, 811, 1622, 2449, 4055, 4898, 8110, 12245, 24490, 25141, 50282, 64069, 125705, 128138, 251410, 320345, 640690, 1986139, 3972278, 9930695, 19861390]

約数ペア:

[(1, 19861390), (2, 9930695), (5, 3972278), (10, 1986139), (31, 640690), (62, 320345), (79, 251410), (155, 128138), (158, 125705), (310, 64069), (395, 50282), (790, 25141), (811, 24490), (1622, 12245), (2449, 8110), (4055, 4898)]