248587720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{811}}^1$

素因数の和:998

約数の個数: 64

約数和(自身を含む): 572947200

約数和(自身を除く): 324359480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 97, 158, 194, 316, 388, 395, 485, 632, 776, 790, 811, 970, 1580, 1622, 1940, 3160, 3244, 3880, 4055, 6488, 7663, 8110, 15326, 16220, 30652, 32440, 38315, 61304, 64069, 76630, 78667, 128138, 153260, 157334, 256276, 306520, 314668, 320345, 393335, 512552, 629336, 640690, 786670, 1281380, 1573340, 2562760, 3146680, 6214693, 12429386, 24858772, 31073465, 49717544, 62146930, 124293860, 248587720]

約数ペア:

[(1, 248587720), (2, 124293860), (4, 62146930), (5, 49717544), (8, 31073465), (10, 24858772), (20, 12429386), (40, 6214693), (79, 3146680), (97, 2562760), (158, 1573340), (194, 1281380), (316, 786670), (388, 640690), (395, 629336), (485, 512552), (632, 393335), (776, 320345), (790, 314668), (811, 306520), (970, 256276), (1580, 157334), (1622, 153260), (1940, 128138), (3160, 78667), (3244, 76630), (3880, 64069), (4055, 61304), (6488, 38315), (7663, 32440), (8110, 30652), (15326, 16220)]