20874160

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:506

約数の個数: 80

約数和(自身を含む): 52853760

約数和(自身を除く): 31979600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 443, 496, 589, 620, 760, 886, 1178, 1240, 1520, 1772, 2215, 2356, 2480, 2945, 3544, 4430, 4712, 5890, 7088, 8417, 8860, 9424, 11780, 13733, 16834, 17720, 23560, 27466, 33668, 35440, 42085, 47120, 54932, 67336, 68665, 84170, 109864, 134672, 137330, 168340, 219728, 260927, 274660, 336680, 521854, 549320, 673360, 1043708, 1098640, 1304635, 2087416, 2609270, 4174832, 5218540, 10437080, 20874160]

約数ペア:

[(1, 20874160), (2, 10437080), (4, 5218540), (5, 4174832), (8, 2609270), (10, 2087416), (16, 1304635), (19, 1098640), (20, 1043708), (31, 673360), (38, 549320), (40, 521854), (62, 336680), (76, 274660), (80, 260927), (95, 219728), (124, 168340), (152, 137330), (155, 134672), (190, 109864), (248, 84170), (304, 68665), (310, 67336), (380, 54932), (443, 47120), (496, 42085), (589, 35440), (620, 33668), (760, 27466), (886, 23560), (1178, 17720), (1240, 16834), (1520, 13733), (1772, 11780), (2215, 9424), (2356, 8860), (2480, 8417), (2945, 7088), (3544, 5890), (4430, 4712)]