1856540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 4536000

約数和(自身を除く): 2679460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 149, 178, 298, 356, 445, 596, 623, 745, 890, 1043, 1246, 1490, 1780, 2086, 2492, 2980, 3115, 4172, 5215, 6230, 10430, 12460, 13261, 20860, 26522, 53044, 66305, 92827, 132610, 185654, 265220, 371308, 464135, 928270, 1856540]

約数ペア:

[(1, 1856540), (2, 928270), (4, 464135), (5, 371308), (7, 265220), (10, 185654), (14, 132610), (20, 92827), (28, 66305), (35, 53044), (70, 26522), (89, 20860), (140, 13261), (149, 12460), (178, 10430), (298, 6230), (356, 5215), (445, 4172), (596, 3115), (623, 2980), (745, 2492), (890, 2086), (1043, 1780), (1246, 1490)]