20427018625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{373}}^1\times {\mathrm{503}}^1$

素因数の和:971

約数の個数: 64

約数和(自身を含む): 27993917952

約数和(自身を除く): 7566899327

約数列:

[1, 5, 13, 25, 65, 67, 125, 325, 335, 373, 503, 871, 1625, 1675, 1865, 2515, 4355, 4849, 6539, 8375, 9325, 12575, 21775, 24245, 24991, 32695, 33701, 46625, 62875, 108875, 121225, 124955, 163475, 168505, 187619, 324883, 438113, 606125, 624775, 817375, 842525, 938095, 1624415, 2190565, 2439047, 3123875, 4212625, 4690475, 8122075, 10952825, 12195235, 12570473, 23452375, 40610375, 54764125, 60976175, 62852365, 163416149, 304880875, 314261825, 817080745, 1571309125, 4085403725, 20427018625]

約数ペア:

[(1, 20427018625), (5, 4085403725), (13, 1571309125), (25, 817080745), (65, 314261825), (67, 304880875), (125, 163416149), (325, 62852365), (335, 60976175), (373, 54764125), (503, 40610375), (871, 23452375), (1625, 12570473), (1675, 12195235), (1865, 10952825), (2515, 8122075), (4355, 4690475), (4849, 4212625), (6539, 3123875), (8375, 2439047), (9325, 2190565), (12575, 1624415), (21775, 938095), (24245, 842525), (24991, 817375), (32695, 624775), (33701, 606125), (46625, 438113), (62875, 324883), (108875, 187619), (121225, 168505), (124955, 163475)]