1642077740

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1\times {\mathrm{1019}}^1$

素因数の和:1634

約数の個数: 48

約数和(自身を含む): 3477751200

約数和(自身を除く): 1835673460

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 409, 788, 818, 985, 1019, 1636, 1970, 2038, 2045, 3940, 4076, 4090, 5095, 8180, 10190, 20380, 80573, 161146, 200743, 322292, 401486, 402865, 416771, 802972, 805730, 833542, 1003715, 1611460, 1667084, 2007430, 2083855, 4014860, 4167710, 8335420, 82103887, 164207774, 328415548, 410519435, 821038870, 1642077740]

約数ペア:

[(1, 1642077740), (2, 821038870), (4, 410519435), (5, 328415548), (10, 164207774), (20, 82103887), (197, 8335420), (394, 4167710), (409, 4014860), (788, 2083855), (818, 2007430), (985, 1667084), (1019, 1611460), (1636, 1003715), (1970, 833542), (2038, 805730), (2045, 802972), (3940, 416771), (4076, 402865), (4090, 401486), (5095, 322292), (8180, 200743), (10190, 161146), (20380, 80573)]