394648640

素因数分解:

$2^6\times 5^1\times {\mathrm{59}}^1\times {\mathrm{20903}}^1$

素因数の和:20979

約数の個数: 56

約数和(自身を含む): 955730880

約数和(自身を除く): 561082240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 160, 236, 295, 320, 472, 590, 944, 1180, 1888, 2360, 3776, 4720, 9440, 18880, 20903, 41806, 83612, 104515, 167224, 209030, 334448, 418060, 668896, 836120, 1233277, 1337792, 1672240, 2466554, 3344480, 4933108, 6166385, 6688960, 9866216, 12332770, 19732432, 24665540, 39464864, 49331080, 78929728, 98662160, 197324320, 394648640]

約数ペア:

[(1, 394648640), (2, 197324320), (4, 98662160), (5, 78929728), (8, 49331080), (10, 39464864), (16, 24665540), (20, 19732432), (32, 12332770), (40, 9866216), (59, 6688960), (64, 6166385), (80, 4933108), (118, 3344480), (160, 2466554), (236, 1672240), (295, 1337792), (320, 1233277), (472, 836120), (590, 668896), (944, 418060), (1180, 334448), (1888, 209030), (2360, 167224), (3776, 104515), (4720, 83612), (9440, 41806), (18880, 20903)]