16271780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1637}}^1$

素因数の和:1724

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 23354716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1637, 1988, 2485, 3274, 4970, 6548, 8185, 9940, 11459, 16370, 22918, 32740, 45836, 57295, 114590, 116227, 229180, 232454, 464908, 581135, 813589, 1162270, 1627178, 2324540, 3254356, 4067945, 8135890, 16271780]

約数ペア:

[(1, 16271780), (2, 8135890), (4, 4067945), (5, 3254356), (7, 2324540), (10, 1627178), (14, 1162270), (20, 813589), (28, 581135), (35, 464908), (70, 232454), (71, 229180), (140, 116227), (142, 114590), (284, 57295), (355, 45836), (497, 32740), (710, 22918), (994, 16370), (1420, 11459), (1637, 9940), (1988, 8185), (2485, 6548), (3274, 4970)]