18893440

素因数分解:

$2^7\times 5^1\times {\mathrm{53}}^1\times {\mathrm{557}}^1$

素因数の和:629

約数の個数: 64

約数和(自身を含む): 46101960

約数和(自身を除く): 27208520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 212, 265, 320, 424, 530, 557, 640, 848, 1060, 1114, 1696, 2120, 2228, 2785, 3392, 4240, 4456, 5570, 6784, 8480, 8912, 11140, 16960, 17824, 22280, 29521, 33920, 35648, 44560, 59042, 71296, 89120, 118084, 147605, 178240, 236168, 295210, 356480, 472336, 590420, 944672, 1180840, 1889344, 2361680, 3778688, 4723360, 9446720, 18893440]

約数ペア:

[(1, 18893440), (2, 9446720), (4, 4723360), (5, 3778688), (8, 2361680), (10, 1889344), (16, 1180840), (20, 944672), (32, 590420), (40, 472336), (53, 356480), (64, 295210), (80, 236168), (106, 178240), (128, 147605), (160, 118084), (212, 89120), (265, 71296), (320, 59042), (424, 44560), (530, 35648), (557, 33920), (640, 29521), (848, 22280), (1060, 17824), (1114, 16960), (1696, 11140), (2120, 8912), (2228, 8480), (2785, 6784), (3392, 5570), (4240, 4456)]