21507850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:224

約数の個数: 96

約数和(自身を含む): 51246720

約数和(自身を除く): 29738870

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 29, 35, 50, 58, 65, 70, 91, 130, 145, 163, 175, 182, 203, 290, 325, 326, 350, 377, 406, 455, 650, 725, 754, 815, 910, 1015, 1141, 1450, 1630, 1885, 2030, 2119, 2275, 2282, 2639, 3770, 4075, 4238, 4550, 4727, 5075, 5278, 5705, 8150, 9425, 9454, 10150, 10595, 11410, 13195, 14833, 18850, 21190, 23635, 26390, 28525, 29666, 33089, 47270, 52975, 57050, 61451, 65975, 66178, 74165, 105950, 118175, 122902, 131950, 148330, 165445, 236350, 307255, 330890, 370825, 430157, 614510, 741650, 827225, 860314, 1536275, 1654450, 2150785, 3072550, 4301570, 10753925, 21507850]

約数ペア:

[(1, 21507850), (2, 10753925), (5, 4301570), (7, 3072550), (10, 2150785), (13, 1654450), (14, 1536275), (25, 860314), (26, 827225), (29, 741650), (35, 614510), (50, 430157), (58, 370825), (65, 330890), (70, 307255), (91, 236350), (130, 165445), (145, 148330), (163, 131950), (175, 122902), (182, 118175), (203, 105950), (290, 74165), (325, 66178), (326, 65975), (350, 61451), (377, 57050), (406, 52975), (455, 47270), (650, 33089), (725, 29666), (754, 28525), (815, 26390), (910, 23635), (1015, 21190), (1141, 18850), (1450, 14833), (1630, 13195), (1885, 11410), (2030, 10595), (2119, 10150), (2275, 9454), (2282, 9425), (2639, 8150), (3770, 5705), (4075, 5278), (4238, 5075), (4550, 4727)]