1900890100

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{3389}}^1$

素因数の和:3553

約数の個数: 72

約数和(自身を含む): 4237228800

約数和(自身を除く): 2336338700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 79, 100, 142, 158, 284, 316, 355, 395, 710, 790, 1420, 1580, 1775, 1975, 3389, 3550, 3950, 5609, 6778, 7100, 7900, 11218, 13556, 16945, 22436, 28045, 33890, 56090, 67780, 84725, 112180, 140225, 169450, 240619, 267731, 280450, 338900, 481238, 535462, 560900, 962476, 1070924, 1203095, 1338655, 2406190, 2677310, 4812380, 5354620, 6015475, 6693275, 12030950, 13386550, 19008901, 24061900, 26773100, 38017802, 76035604, 95044505, 190089010, 380178020, 475222525, 950445050, 1900890100]

約数ペア:

[(1, 1900890100), (2, 950445050), (4, 475222525), (5, 380178020), (10, 190089010), (20, 95044505), (25, 76035604), (50, 38017802), (71, 26773100), (79, 24061900), (100, 19008901), (142, 13386550), (158, 12030950), (284, 6693275), (316, 6015475), (355, 5354620), (395, 4812380), (710, 2677310), (790, 2406190), (1420, 1338655), (1580, 1203095), (1775, 1070924), (1975, 962476), (3389, 560900), (3550, 535462), (3950, 481238), (5609, 338900), (6778, 280450), (7100, 267731), (7900, 240619), (11218, 169450), (13556, 140225), (16945, 112180), (22436, 84725), (28045, 67780), (33890, 56090)]