16728740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{331}}^1$

素因数の和:385

約数の個数: 72

約数和(自身を含む): 42501312

約数和(自身を除く): 25772572

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 331, 361, 380, 532, 662, 665, 722, 1324, 1330, 1444, 1655, 1805, 2317, 2527, 2660, 3310, 3610, 4634, 5054, 6289, 6620, 7220, 9268, 10108, 11585, 12578, 12635, 23170, 25156, 25270, 31445, 44023, 46340, 50540, 62890, 88046, 119491, 125780, 176092, 220115, 238982, 440230, 477964, 597455, 836437, 880460, 1194910, 1672874, 2389820, 3345748, 4182185, 8364370, 16728740]

約数ペア:

[(1, 16728740), (2, 8364370), (4, 4182185), (5, 3345748), (7, 2389820), (10, 1672874), (14, 1194910), (19, 880460), (20, 836437), (28, 597455), (35, 477964), (38, 440230), (70, 238982), (76, 220115), (95, 176092), (133, 125780), (140, 119491), (190, 88046), (266, 62890), (331, 50540), (361, 46340), (380, 44023), (532, 31445), (662, 25270), (665, 25156), (722, 23170), (1324, 12635), (1330, 12578), (1444, 11585), (1655, 10108), (1805, 9268), (2317, 7220), (2527, 6620), (2660, 6289), (3310, 5054), (3610, 4634)]