20190178480

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1\times {\mathrm{12583}}^1$

素因数の和:13274

約数の個数: 80

約数和(自身を含む): 48535179264

約数和(自身を除く): 28345000784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 647, 1240, 1294, 2480, 2588, 3235, 5176, 6470, 10352, 12583, 12940, 20057, 25166, 25880, 40114, 50332, 51760, 62915, 80228, 100285, 100664, 125830, 160456, 200570, 201328, 251660, 320912, 390073, 401140, 503320, 780146, 802280, 1006640, 1560292, 1604560, 1950365, 3120584, 3900730, 6241168, 7801460, 8141201, 15602920, 16282402, 31205840, 32564804, 40706005, 65129608, 81412010, 130259216, 162824020, 252377231, 325648040, 504754462, 651296080, 1009508924, 1261886155, 2019017848, 2523772310, 4038035696, 5047544620, 10095089240, 20190178480]

約数ペア:

[(1, 20190178480), (2, 10095089240), (4, 5047544620), (5, 4038035696), (8, 2523772310), (10, 2019017848), (16, 1261886155), (20, 1009508924), (31, 651296080), (40, 504754462), (62, 325648040), (80, 252377231), (124, 162824020), (155, 130259216), (248, 81412010), (310, 65129608), (496, 40706005), (620, 32564804), (647, 31205840), (1240, 16282402), (1294, 15602920), (2480, 8141201), (2588, 7801460), (3235, 6241168), (5176, 3900730), (6470, 3120584), (10352, 1950365), (12583, 1604560), (12940, 1560292), (20057, 1006640), (25166, 802280), (25880, 780146), (40114, 503320), (50332, 401140), (51760, 390073), (62915, 320912), (80228, 251660), (100285, 201328), (100664, 200570), (125830, 160456)]