20205890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:418

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 17118910

約数列:

[1, 2, 5, 10, 71, 142, 149, 191, 298, 355, 382, 710, 745, 955, 1490, 1910, 10579, 13561, 21158, 27122, 28459, 52895, 56918, 67805, 105790, 135610, 142295, 284590, 2020589, 4041178, 10102945, 20205890]

約数ペア:

[(1, 20205890), (2, 10102945), (5, 4041178), (10, 2020589), (71, 284590), (142, 142295), (149, 135610), (191, 105790), (298, 67805), (355, 56918), (382, 52895), (710, 28459), (745, 27122), (955, 21158), (1490, 13561), (1910, 10579)]