78981800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{12739}}^1$

素因数の和:12786

約数の個数: 48

約数和(自身を含む): 189571200

約数和(自身を除く): 110589400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 6200, 12739, 25478, 50956, 63695, 101912, 127390, 254780, 318475, 394909, 509560, 636950, 789818, 1273900, 1579636, 1974545, 2547800, 3159272, 3949090, 7898180, 9872725, 15796360, 19745450, 39490900, 78981800]

約数ペア:

[(1, 78981800), (2, 39490900), (4, 19745450), (5, 15796360), (8, 9872725), (10, 7898180), (20, 3949090), (25, 3159272), (31, 2547800), (40, 1974545), (50, 1579636), (62, 1273900), (100, 789818), (124, 636950), (155, 509560), (200, 394909), (248, 318475), (310, 254780), (620, 127390), (775, 101912), (1240, 63695), (1550, 50956), (3100, 25478), (6200, 12739)]