861800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 2083200

約数和(自身を除く): 1221400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 139, 155, 200, 248, 278, 310, 556, 620, 695, 775, 1112, 1240, 1390, 1550, 2780, 3100, 3475, 4309, 5560, 6200, 6950, 8618, 13900, 17236, 21545, 27800, 34472, 43090, 86180, 107725, 172360, 215450, 430900, 861800]

約数ペア:

[(1, 861800), (2, 430900), (4, 215450), (5, 172360), (8, 107725), (10, 86180), (20, 43090), (25, 34472), (31, 27800), (40, 21545), (50, 17236), (62, 13900), (100, 8618), (124, 6950), (139, 6200), (155, 5560), (200, 4309), (248, 3475), (278, 3100), (310, 2780), (556, 1550), (620, 1390), (695, 1240), (775, 1112)]