21203580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:235

約数の個数: 96

約数和(自身を含む): 62060544

約数和(自身を除く): 40856964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 73, 94, 103, 141, 146, 188, 206, 219, 235, 282, 292, 309, 365, 412, 438, 470, 515, 564, 618, 705, 730, 876, 940, 1030, 1095, 1236, 1410, 1460, 1545, 2060, 2190, 2820, 3090, 3431, 4380, 4841, 6180, 6862, 7519, 9682, 10293, 13724, 14523, 15038, 17155, 19364, 20586, 22557, 24205, 29046, 30076, 34310, 37595, 41172, 45114, 48410, 51465, 58092, 68620, 72615, 75190, 90228, 96820, 102930, 112785, 145230, 150380, 205860, 225570, 290460, 353393, 451140, 706786, 1060179, 1413572, 1766965, 2120358, 3533930, 4240716, 5300895, 7067860, 10601790, 21203580]

約数ペア:

[(1, 21203580), (2, 10601790), (3, 7067860), (4, 5300895), (5, 4240716), (6, 3533930), (10, 2120358), (12, 1766965), (15, 1413572), (20, 1060179), (30, 706786), (47, 451140), (60, 353393), (73, 290460), (94, 225570), (103, 205860), (141, 150380), (146, 145230), (188, 112785), (206, 102930), (219, 96820), (235, 90228), (282, 75190), (292, 72615), (309, 68620), (365, 58092), (412, 51465), (438, 48410), (470, 45114), (515, 41172), (564, 37595), (618, 34310), (705, 30076), (730, 29046), (876, 24205), (940, 22557), (1030, 20586), (1095, 19364), (1236, 17155), (1410, 15038), (1460, 14523), (1545, 13724), (2060, 10293), (2190, 9682), (2820, 7519), (3090, 6862), (3431, 6180), (4380, 4841)]