256002760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1583}}^1$

素因数の和:1918

約数の個数: 64

約数和(自身を含む): 622702080

約数和(自身を除く): 366699320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 311, 520, 622, 1244, 1555, 1583, 2488, 3110, 3166, 4043, 6220, 6332, 7915, 8086, 12440, 12664, 15830, 16172, 20215, 20579, 31660, 32344, 40430, 41158, 63320, 80860, 82316, 102895, 161720, 164632, 205790, 411580, 492313, 823160, 984626, 1969252, 2461565, 3938504, 4923130, 6400069, 9846260, 12800138, 19692520, 25600276, 32000345, 51200552, 64000690, 128001380, 256002760]

約数ペア:

[(1, 256002760), (2, 128001380), (4, 64000690), (5, 51200552), (8, 32000345), (10, 25600276), (13, 19692520), (20, 12800138), (26, 9846260), (40, 6400069), (52, 4923130), (65, 3938504), (104, 2461565), (130, 1969252), (260, 984626), (311, 823160), (520, 492313), (622, 411580), (1244, 205790), (1555, 164632), (1583, 161720), (2488, 102895), (3110, 82316), (3166, 80860), (4043, 63320), (6220, 41158), (6332, 40430), (7915, 32344), (8086, 31660), (12440, 20579), (12664, 20215), (15830, 16172)]