81930520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9439}}^1$

素因数の和:9488

約数の個数: 64

約数和(自身を含む): 217497600

約数和(自身を除く): 135567080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 9439, 18878, 37756, 47195, 66073, 75512, 94390, 132146, 188780, 264292, 292609, 330365, 377560, 528584, 585218, 660730, 1170436, 1321460, 1463045, 2048263, 2340872, 2642920, 2926090, 4096526, 5852180, 8193052, 10241315, 11704360, 16386104, 20482630, 40965260, 81930520]

約数ペア:

[(1, 81930520), (2, 40965260), (4, 20482630), (5, 16386104), (7, 11704360), (8, 10241315), (10, 8193052), (14, 5852180), (20, 4096526), (28, 2926090), (31, 2642920), (35, 2340872), (40, 2048263), (56, 1463045), (62, 1321460), (70, 1170436), (124, 660730), (140, 585218), (155, 528584), (217, 377560), (248, 330365), (280, 292609), (310, 264292), (434, 188780), (620, 132146), (868, 94390), (1085, 75512), (1240, 66073), (1736, 47195), (2170, 37756), (4340, 18878), (8680, 9439)]