204820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1$

素因数の和:53

約数の個数: 72

約数和(自身を含む): 574560

約数和(自身を除く): 369740

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 49, 55, 70, 76, 77, 95, 98, 110, 133, 140, 154, 190, 196, 209, 220, 245, 266, 308, 380, 385, 418, 490, 532, 539, 665, 770, 836, 931, 980, 1045, 1078, 1330, 1463, 1540, 1862, 2090, 2156, 2660, 2695, 2926, 3724, 4180, 4655, 5390, 5852, 7315, 9310, 10241, 10780, 14630, 18620, 20482, 29260, 40964, 51205, 102410, 204820]

約数ペア:

[(1, 204820), (2, 102410), (4, 51205), (5, 40964), (7, 29260), (10, 20482), (11, 18620), (14, 14630), (19, 10780), (20, 10241), (22, 9310), (28, 7315), (35, 5852), (38, 5390), (44, 4655), (49, 4180), (55, 3724), (70, 2926), (76, 2695), (77, 2660), (95, 2156), (98, 2090), (110, 1862), (133, 1540), (140, 1463), (154, 1330), (190, 1078), (196, 1045), (209, 980), (220, 931), (245, 836), (266, 770), (308, 665), (380, 539), (385, 532), (418, 490)]