21354420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{2357}}^1$

素因数の和:2520

約数の個数: 48

約数和(自身を含む): 60213888

約数和(自身を除く): 38859468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 151, 302, 453, 604, 755, 906, 1510, 1812, 2265, 2357, 3020, 4530, 4714, 7071, 9060, 9428, 11785, 14142, 23570, 28284, 35355, 47140, 70710, 141420, 355907, 711814, 1067721, 1423628, 1779535, 2135442, 3559070, 4270884, 5338605, 7118140, 10677210, 21354420]

約数ペア:

[(1, 21354420), (2, 10677210), (3, 7118140), (4, 5338605), (5, 4270884), (6, 3559070), (10, 2135442), (12, 1779535), (15, 1423628), (20, 1067721), (30, 711814), (60, 355907), (151, 141420), (302, 70710), (453, 47140), (604, 35355), (755, 28284), (906, 23570), (1510, 14142), (1812, 11785), (2265, 9428), (2357, 9060), (3020, 7071), (4530, 4714)]