20751400

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3347}}^1$

素因数の和:3394

約数の個数: 48

約数和(自身を含む): 49818240

約数和(自身を除く): 29066840

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, 3347, 6200, 6694, 13388, 16735, 26776, 33470, 66940, 83675, 103757, 133880, 167350, 207514, 334700, 415028, 518785, 669400, 830056, 1037570, 2075140, 2593925, 4150280, 5187850, 10375700, 20751400]

約数ペア:

[(1, 20751400), (2, 10375700), (4, 5187850), (5, 4150280), (8, 2593925), (10, 2075140), (20, 1037570), (25, 830056), (31, 669400), (40, 518785), (50, 415028), (62, 334700), (100, 207514), (124, 167350), (155, 133880), (200, 103757), (248, 83675), (310, 66940), (620, 33470), (775, 26776), (1240, 16735), (1550, 13388), (3100, 6694), (3347, 6200)]