81637220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 204374016

約数和(自身を除く): 122736796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 71, 86, 140, 142, 172, 191, 215, 284, 301, 355, 382, 430, 497, 602, 710, 764, 860, 955, 994, 1204, 1337, 1420, 1505, 1910, 1988, 2485, 2674, 3010, 3053, 3820, 4970, 5348, 6020, 6106, 6685, 8213, 9940, 12212, 13370, 13561, 15265, 16426, 21371, 26740, 27122, 30530, 32852, 41065, 42742, 54244, 57491, 61060, 67805, 82130, 85484, 94927, 106855, 114982, 135610, 164260, 189854, 213710, 229964, 271220, 287455, 379708, 427420, 474635, 574910, 583123, 949270, 1149820, 1166246, 1898540, 2332492, 2915615, 4081861, 5831230, 8163722, 11662460, 16327444, 20409305, 40818610, 81637220]

約数ペア:

[(1, 81637220), (2, 40818610), (4, 20409305), (5, 16327444), (7, 11662460), (10, 8163722), (14, 5831230), (20, 4081861), (28, 2915615), (35, 2332492), (43, 1898540), (70, 1166246), (71, 1149820), (86, 949270), (140, 583123), (142, 574910), (172, 474635), (191, 427420), (215, 379708), (284, 287455), (301, 271220), (355, 229964), (382, 213710), (430, 189854), (497, 164260), (602, 135610), (710, 114982), (764, 106855), (860, 94927), (955, 85484), (994, 82130), (1204, 67805), (1337, 61060), (1420, 57491), (1505, 54244), (1910, 42742), (1988, 41065), (2485, 32852), (2674, 30530), (3010, 27122), (3053, 26740), (3820, 21371), (4970, 16426), (5348, 15265), (6020, 13561), (6106, 13370), (6685, 12212), (8213, 9940)]