25721320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20743}}^1$

素因数の和:20785

約数の個数: 32

約数和(自身を含む): 59742720

約数和(自身を除く): 34021400

約数列:

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

約数ペア:

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