858015020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{3929}}^1$

素因数の和:4178

約数の個数: 48

約数和(自身を含む): 1842069600

約数和(自身を除く): 984054580

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 179, 244, 305, 358, 610, 716, 895, 1220, 1790, 3580, 3929, 7858, 10919, 15716, 19645, 21838, 39290, 43676, 54595, 78580, 109190, 218380, 239669, 479338, 703291, 958676, 1198345, 1406582, 2396690, 2813164, 3516455, 4793380, 7032910, 14065820, 42900751, 85801502, 171603004, 214503755, 429007510, 858015020]

約数ペア:

[(1, 858015020), (2, 429007510), (4, 214503755), (5, 171603004), (10, 85801502), (20, 42900751), (61, 14065820), (122, 7032910), (179, 4793380), (244, 3516455), (305, 2813164), (358, 2396690), (610, 1406582), (716, 1198345), (895, 958676), (1220, 703291), (1790, 479338), (3580, 239669), (3929, 218380), (7858, 109190), (10919, 78580), (15716, 54595), (19645, 43676), (21838, 39290)]