25019980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{619}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 54996480

約数和(自身を除く): 29976500

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 619, 860, 940, 1238, 2021, 2476, 3095, 4042, 6190, 8084, 10105, 12380, 20210, 26617, 29093, 40420, 53234, 58186, 106468, 116372, 133085, 145465, 266170, 290930, 532340, 581860, 1250999, 2501998, 5003996, 6254995, 12509990, 25019980]

約数ペア:

[(1, 25019980), (2, 12509990), (4, 6254995), (5, 5003996), (10, 2501998), (20, 1250999), (43, 581860), (47, 532340), (86, 290930), (94, 266170), (172, 145465), (188, 133085), (215, 116372), (235, 106468), (430, 58186), (470, 53234), (619, 40420), (860, 29093), (940, 26617), (1238, 20210), (2021, 12380), (2476, 10105), (3095, 8084), (4042, 6190)]