51442640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20743}}^1$

素因数の和:20787

約数の個数: 40

約数和(自身を含む): 123468288

約数和(自身を除く): 72025648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 20743, 41486, 82972, 103715, 165944, 207430, 331888, 414860, 643033, 829720, 1286066, 1659440, 2572132, 3215165, 5144264, 6430330, 10288528, 12860660, 25721320, 51442640]

約数ペア:

[(1, 51442640), (2, 25721320), (4, 12860660), (5, 10288528), (8, 6430330), (10, 5144264), (16, 3215165), (20, 2572132), (31, 1659440), (40, 1286066), (62, 829720), (80, 643033), (124, 414860), (155, 331888), (248, 207430), (310, 165944), (496, 103715), (620, 82972), (1240, 41486), (2480, 20743)]