254980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:100

約数の個数: 48

約数和(自身を含む): 624960

約数和(自身を除く): 369980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 61, 76, 95, 110, 122, 190, 209, 220, 244, 305, 380, 418, 610, 671, 836, 1045, 1159, 1220, 1342, 2090, 2318, 2684, 3355, 4180, 4636, 5795, 6710, 11590, 12749, 13420, 23180, 25498, 50996, 63745, 127490, 254980]

約数ペア:

[(1, 254980), (2, 127490), (4, 63745), (5, 50996), (10, 25498), (11, 23180), (19, 13420), (20, 12749), (22, 11590), (38, 6710), (44, 5795), (55, 4636), (61, 4180), (76, 3355), (95, 2684), (110, 2318), (122, 2090), (190, 1342), (209, 1220), (220, 1159), (244, 1045), (305, 836), (380, 671), (418, 610)]