447640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1$

素因数の和:80

約数の個数: 48

約数和(自身を含む): 1097280

約数和(自身を除く): 649640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 361, 380, 589, 620, 722, 760, 1178, 1240, 1444, 1805, 2356, 2888, 2945, 3610, 4712, 5890, 7220, 11191, 11780, 14440, 22382, 23560, 44764, 55955, 89528, 111910, 223820, 447640]

約数ペア:

[(1, 447640), (2, 223820), (4, 111910), (5, 89528), (8, 55955), (10, 44764), (19, 23560), (20, 22382), (31, 14440), (38, 11780), (40, 11191), (62, 7220), (76, 5890), (95, 4712), (124, 3610), (152, 2945), (155, 2888), (190, 2356), (248, 1805), (310, 1444), (361, 1240), (380, 1178), (589, 760), (620, 722)]