681520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1217}}^1$

素因数の和:1237

約数の個数: 40

約数和(自身を含む): 1812384

約数和(自身を除く): 1130864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1217, 2434, 4868, 6085, 8519, 9736, 12170, 17038, 19472, 24340, 34076, 42595, 48680, 68152, 85190, 97360, 136304, 170380, 340760, 681520]

約数ペア:

[(1, 681520), (2, 340760), (4, 170380), (5, 136304), (7, 97360), (8, 85190), (10, 68152), (14, 48680), (16, 42595), (20, 34076), (28, 24340), (35, 19472), (40, 17038), (56, 12170), (70, 9736), (80, 8519), (112, 6085), (140, 4868), (280, 2434), (560, 1217)]