21453990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16631}}^1$

素因数の和:16684

約数の個数: 32

約数和(自身を含む): 52690176

約数和(自身を除く): 31236186

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 16631, 33262, 49893, 83155, 99786, 166310, 249465, 498930, 715133, 1430266, 2145399, 3575665, 4290798, 7151330, 10726995, 21453990]

約数ペア:

[(1, 21453990), (2, 10726995), (3, 7151330), (5, 4290798), (6, 3575665), (10, 2145399), (15, 1430266), (30, 715133), (43, 498930), (86, 249465), (129, 166310), (215, 99786), (258, 83155), (430, 49893), (645, 33262), (1290, 16631)]