21384860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1483}}^1$

素因数の和:1602

約数の個数: 48

約数和(自身を含む): 51856896

約数和(自身を除く): 30472036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1442, 1483, 2060, 2884, 2966, 3605, 5932, 7210, 7415, 10381, 14420, 14830, 20762, 29660, 41524, 51905, 103810, 152749, 207620, 305498, 610996, 763745, 1069243, 1527490, 2138486, 3054980, 4276972, 5346215, 10692430, 21384860]

約数ペア:

[(1, 21384860), (2, 10692430), (4, 5346215), (5, 4276972), (7, 3054980), (10, 2138486), (14, 1527490), (20, 1069243), (28, 763745), (35, 610996), (70, 305498), (103, 207620), (140, 152749), (206, 103810), (412, 51905), (515, 41524), (721, 29660), (1030, 20762), (1442, 14830), (1483, 14420), (2060, 10381), (2884, 7415), (2966, 7210), (3605, 5932)]