198372100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{719}}^1$

素因数の和:853

約数の個数: 72

約数和(自身を含む): 449971200

約数和(自身を除く): 251599100

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 89, 100, 124, 155, 178, 310, 356, 445, 620, 719, 775, 890, 1438, 1550, 1780, 2225, 2759, 2876, 3100, 3595, 4450, 5518, 7190, 8900, 11036, 13795, 14380, 17975, 22289, 27590, 35950, 44578, 55180, 63991, 68975, 71900, 89156, 111445, 127982, 137950, 222890, 255964, 275900, 319955, 445780, 557225, 639910, 1114450, 1279820, 1599775, 1983721, 2228900, 3199550, 3967442, 6399100, 7934884, 9918605, 19837210, 39674420, 49593025, 99186050, 198372100]

約数ペア:

[(1, 198372100), (2, 99186050), (4, 49593025), (5, 39674420), (10, 19837210), (20, 9918605), (25, 7934884), (31, 6399100), (50, 3967442), (62, 3199550), (89, 2228900), (100, 1983721), (124, 1599775), (155, 1279820), (178, 1114450), (310, 639910), (356, 557225), (445, 445780), (620, 319955), (719, 275900), (775, 255964), (890, 222890), (1438, 137950), (1550, 127982), (1780, 111445), (2225, 89156), (2759, 71900), (2876, 68975), (3100, 63991), (3595, 55180), (4450, 44578), (5518, 35950), (7190, 27590), (8900, 22289), (11036, 17975), (13795, 14380)]