28975700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{719}}^1$

素因数の和:777

約数の個数: 72

約数和(自身を含む): 69995520

約数和(自身を除く): 41019820

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 130, 155, 260, 310, 325, 403, 620, 650, 719, 775, 806, 1300, 1438, 1550, 1612, 2015, 2876, 3100, 3595, 4030, 7190, 8060, 9347, 10075, 14380, 17975, 18694, 20150, 22289, 35950, 37388, 40300, 44578, 46735, 71900, 89156, 93470, 111445, 186940, 222890, 233675, 289757, 445780, 467350, 557225, 579514, 934700, 1114450, 1159028, 1448785, 2228900, 2897570, 5795140, 7243925, 14487850, 28975700]

約数ペア:

[(1, 28975700), (2, 14487850), (4, 7243925), (5, 5795140), (10, 2897570), (13, 2228900), (20, 1448785), (25, 1159028), (26, 1114450), (31, 934700), (50, 579514), (52, 557225), (62, 467350), (65, 445780), (100, 289757), (124, 233675), (130, 222890), (155, 186940), (260, 111445), (310, 93470), (325, 89156), (403, 71900), (620, 46735), (650, 44578), (719, 40300), (775, 37388), (806, 35950), (1300, 22289), (1438, 20150), (1550, 18694), (1612, 17975), (2015, 14380), (2876, 10075), (3100, 9347), (3595, 8060), (4030, 7190)]