857579180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{8273}}^1$

素因数の和:8426

約数の個数: 48

約数和(自身を含む): 1851522624

約数和(自身を除く): 993943444

約数列:

[1, 2, 4, 5, 10, 20, 71, 73, 142, 146, 284, 292, 355, 365, 710, 730, 1420, 1460, 5183, 8273, 10366, 16546, 20732, 25915, 33092, 41365, 51830, 82730, 103660, 165460, 587383, 603929, 1174766, 1207858, 2349532, 2415716, 2936915, 3019645, 5873830, 6039290, 11747660, 12078580, 42878959, 85757918, 171515836, 214394795, 428789590, 857579180]

約数ペア:

[(1, 857579180), (2, 428789590), (4, 214394795), (5, 171515836), (10, 85757918), (20, 42878959), (71, 12078580), (73, 11747660), (142, 6039290), (146, 5873830), (284, 3019645), (292, 2936915), (355, 2415716), (365, 2349532), (710, 1207858), (730, 1174766), (1420, 603929), (1460, 587383), (5183, 165460), (8273, 103660), (10366, 82730), (16546, 51830), (20732, 41365), (25915, 33092)]