25988300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19991}}^1$

素因数の和:20018

約数の個数: 36

約数和(自身を含む): 60735696

約数和(自身を除く): 34747396

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 19991, 39982, 79964, 99955, 199910, 259883, 399820, 499775, 519766, 999550, 1039532, 1299415, 1999100, 2598830, 5197660, 6497075, 12994150, 25988300]

約数ペア:

[(1, 25988300), (2, 12994150), (4, 6497075), (5, 5197660), (10, 2598830), (13, 1999100), (20, 1299415), (25, 1039532), (26, 999550), (50, 519766), (52, 499775), (65, 399820), (100, 259883), (130, 199910), (260, 99955), (325, 79964), (650, 39982), (1300, 19991)]