215450

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:182

約数の個数: 24

約数和(自身を含む): 416640

約数和(自身を除く): 201190

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 139, 155, 278, 310, 695, 775, 1390, 1550, 3475, 4309, 6950, 8618, 21545, 43090, 107725, 215450]

約数ペア:

[(1, 215450), (2, 107725), (5, 43090), (10, 21545), (25, 8618), (31, 6950), (50, 4309), (62, 3475), (139, 1550), (155, 1390), (278, 775), (310, 695)]