21179680

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6967}}^1$

素因数の和:7001

約数の個数: 48

約数和(自身を含む): 52678080

約数和(自身を除く): 31498400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6967, 13934, 27868, 34835, 55736, 69670, 111472, 132373, 139340, 222944, 264746, 278680, 529492, 557360, 661865, 1058984, 1114720, 1323730, 2117968, 2647460, 4235936, 5294920, 10589840, 21179680]

約数ペア:

[(1, 21179680), (2, 10589840), (4, 5294920), (5, 4235936), (8, 2647460), (10, 2117968), (16, 1323730), (19, 1114720), (20, 1058984), (32, 661865), (38, 557360), (40, 529492), (76, 278680), (80, 264746), (95, 222944), (152, 139340), (160, 132373), (190, 111472), (304, 69670), (380, 55736), (608, 34835), (760, 27868), (1520, 13934), (3040, 6967)]