21501290

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1613}}^1$

素因数の和:1694

約数の個数: 32

約数和(自身を含む): 40905216

約数和(自身を除く): 19403926

約数列:

[1, 2, 5, 10, 31, 43, 62, 86, 155, 215, 310, 430, 1333, 1613, 2666, 3226, 6665, 8065, 13330, 16130, 50003, 69359, 100006, 138718, 250015, 346795, 500030, 693590, 2150129, 4300258, 10750645, 21501290]

約数ペア:

[(1, 21501290), (2, 10750645), (5, 4300258), (10, 2150129), (31, 693590), (43, 500030), (62, 346795), (86, 250015), (155, 138718), (215, 100006), (310, 69359), (430, 50003), (1333, 16130), (1613, 13330), (2666, 8065), (3226, 6665)]