641308160

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8081}}^1$

素因数の和:8135

約数の個数: 80

約数和(自身を含む): 1587434112

約数和(自身を除く): 946125952

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, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 7936, 8081, 9920, 15872, 16162, 19840, 32324, 39680, 40405, 64648, 79360, 80810, 129296, 161620, 250511, 258592, 323240, 501022, 517184, 646480, 1002044, 1034368, 1252555, 1292960, 2004088, 2068736, 2505110, 2585920, 4008176, 4137472, 5010220, 5171840, 8016352, 10020440, 10343680, 16032704, 20040880, 20687360, 32065408, 40081760, 64130816, 80163520, 128261632, 160327040, 320654080, 641308160]

約数ペア:

[(1, 641308160), (2, 320654080), (4, 160327040), (5, 128261632), (8, 80163520), (10, 64130816), (16, 40081760), (20, 32065408), (31, 20687360), (32, 20040880), (40, 16032704), (62, 10343680), (64, 10020440), (80, 8016352), (124, 5171840), (128, 5010220), (155, 4137472), (160, 4008176), (248, 2585920), (256, 2505110), (310, 2068736), (320, 2004088), (496, 1292960), (512, 1252555), (620, 1034368), (640, 1002044), (992, 646480), (1240, 517184), (1280, 501022), (1984, 323240), (2480, 258592), (2560, 250511), (3968, 161620), (4960, 129296), (7936, 80810), (8081, 79360), (9920, 64648), (15872, 40405), (16162, 39680), (19840, 32324)]