20145949880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{372797}}^1$

素因数の和:373008

約数の個数: 64

約数和(自身を含む): 52072424640

約数和(自身を除く): 31926474760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 193, 280, 386, 772, 965, 1351, 1544, 1930, 2702, 3860, 5404, 6755, 7720, 10808, 13510, 27020, 54040, 372797, 745594, 1491188, 1863985, 2609579, 2982376, 3727970, 5219158, 7455940, 10438316, 13047895, 14911880, 20876632, 26095790, 52191580, 71949821, 104383160, 143899642, 287799284, 359749105, 503648747, 575598568, 719498210, 1007297494, 1438996420, 2014594988, 2518243735, 2877992840, 4029189976, 5036487470, 10072974940, 20145949880]

約数ペア:

[(1, 20145949880), (2, 10072974940), (4, 5036487470), (5, 4029189976), (7, 2877992840), (8, 2518243735), (10, 2014594988), (14, 1438996420), (20, 1007297494), (28, 719498210), (35, 575598568), (40, 503648747), (56, 359749105), (70, 287799284), (140, 143899642), (193, 104383160), (280, 71949821), (386, 52191580), (772, 26095790), (965, 20876632), (1351, 14911880), (1544, 13047895), (1930, 10438316), (2702, 7455940), (3860, 5219158), (5404, 3727970), (6755, 2982376), (7720, 2609579), (10808, 1863985), (13510, 1491188), (27020, 745594), (54040, 372797)]