20295860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{311}}^1$

素因数の和:584

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 25935052

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 251, 260, 311, 502, 622, 1004, 1244, 1255, 1555, 2510, 3110, 3263, 4043, 5020, 6220, 6526, 8086, 13052, 16172, 16315, 20215, 32630, 40430, 65260, 78061, 80860, 156122, 312244, 390305, 780610, 1014793, 1561220, 2029586, 4059172, 5073965, 10147930, 20295860]

約数ペア:

[(1, 20295860), (2, 10147930), (4, 5073965), (5, 4059172), (10, 2029586), (13, 1561220), (20, 1014793), (26, 780610), (52, 390305), (65, 312244), (130, 156122), (251, 80860), (260, 78061), (311, 65260), (502, 40430), (622, 32630), (1004, 20215), (1244, 16315), (1255, 16172), (1555, 13052), (2510, 8086), (3110, 6526), (3263, 6220), (4043, 5020)]