30990520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{337}}^1$

素因数の和:389

約数の個数: 96

約数和(自身を含む): 80917200

約数和(自身を除く): 49926680

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 121, 152, 190, 209, 220, 242, 337, 380, 418, 440, 484, 605, 674, 760, 836, 968, 1045, 1210, 1348, 1672, 1685, 2090, 2299, 2420, 2696, 3370, 3707, 4180, 4598, 4840, 6403, 6740, 7414, 8360, 9196, 11495, 12806, 13480, 14828, 18392, 18535, 22990, 25612, 29656, 32015, 37070, 40777, 45980, 51224, 64030, 70433, 74140, 81554, 91960, 128060, 140866, 148280, 163108, 203885, 256120, 281732, 326216, 352165, 407770, 563464, 704330, 774763, 815540, 1408660, 1549526, 1631080, 2817320, 3099052, 3873815, 6198104, 7747630, 15495260, 30990520]

約数ペア:

[(1, 30990520), (2, 15495260), (4, 7747630), (5, 6198104), (8, 3873815), (10, 3099052), (11, 2817320), (19, 1631080), (20, 1549526), (22, 1408660), (38, 815540), (40, 774763), (44, 704330), (55, 563464), (76, 407770), (88, 352165), (95, 326216), (110, 281732), (121, 256120), (152, 203885), (190, 163108), (209, 148280), (220, 140866), (242, 128060), (337, 91960), (380, 81554), (418, 74140), (440, 70433), (484, 64030), (605, 51224), (674, 45980), (760, 40777), (836, 37070), (968, 32015), (1045, 29656), (1210, 25612), (1348, 22990), (1672, 18535), (1685, 18392), (2090, 14828), (2299, 13480), (2420, 12806), (2696, 11495), (3370, 9196), (3707, 8360), (4180, 7414), (4598, 6740), (4840, 6403)]