320654080

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8081}}^1$

素因数の和:8133

約数の個数: 72

約数和(自身を含む): 792941184

約数和(自身を除く): 472287104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 8081, 9920, 16162, 19840, 32324, 39680, 40405, 64648, 80810, 129296, 161620, 250511, 258592, 323240, 501022, 517184, 646480, 1002044, 1034368, 1252555, 1292960, 2004088, 2068736, 2505110, 2585920, 4008176, 5010220, 5171840, 8016352, 10020440, 10343680, 16032704, 20040880, 32065408, 40081760, 64130816, 80163520, 160327040, 320654080]

約数ペア:

[(1, 320654080), (2, 160327040), (4, 80163520), (5, 64130816), (8, 40081760), (10, 32065408), (16, 20040880), (20, 16032704), (31, 10343680), (32, 10020440), (40, 8016352), (62, 5171840), (64, 5010220), (80, 4008176), (124, 2585920), (128, 2505110), (155, 2068736), (160, 2004088), (248, 1292960), (256, 1252555), (310, 1034368), (320, 1002044), (496, 646480), (620, 517184), (640, 501022), (992, 323240), (1240, 258592), (1280, 250511), (1984, 161620), (2480, 129296), (3968, 80810), (4960, 64648), (7936, 40405), (8081, 39680), (9920, 32324), (16162, 19840)]