21248516

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{349}}^1\times {\mathrm{491}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 38572800

約数和(自身を除く): 17324284

約数列:

[1, 2, 4, 31, 62, 124, 349, 491, 698, 982, 1396, 1964, 10819, 15221, 21638, 30442, 43276, 60884, 171359, 342718, 685436, 5312129, 10624258, 21248516]

約数ペア:

[(1, 21248516), (2, 10624258), (4, 5312129), (31, 685436), (62, 342718), (124, 171359), (349, 60884), (491, 43276), (698, 30442), (982, 21638), (1396, 15221), (1964, 10819)]