128457800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{20719}}^1$

素因数の和:20766

約数の個数: 48

約数和(自身を含む): 308313600

約数和(自身を除く): 179855800

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, 20719, 41438, 82876, 103595, 165752, 207190, 414380, 517975, 642289, 828760, 1035950, 1284578, 2071900, 2569156, 3211445, 4143800, 5138312, 6422890, 12845780, 16057225, 25691560, 32114450, 64228900, 128457800]

約数ペア:

[(1, 128457800), (2, 64228900), (4, 32114450), (5, 25691560), (8, 16057225), (10, 12845780), (20, 6422890), (25, 5138312), (31, 4143800), (40, 3211445), (50, 2569156), (62, 2071900), (100, 1284578), (124, 1035950), (155, 828760), (200, 642289), (248, 517975), (310, 414380), (620, 207190), (775, 165752), (1240, 103595), (1550, 82876), (3100, 41438), (6200, 20719)]