21740085

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{541}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 40584960

約数和(自身を除く): 18844875

約数列:

[1, 3, 5, 9, 15, 19, 45, 47, 57, 95, 141, 171, 235, 285, 423, 541, 705, 855, 893, 1623, 2115, 2679, 2705, 4465, 4869, 8037, 8115, 10279, 13395, 24345, 25427, 30837, 40185, 51395, 76281, 92511, 127135, 154185, 228843, 381405, 462555, 483113, 1144215, 1449339, 2415565, 4348017, 7246695, 21740085]

約数ペア:

[(1, 21740085), (3, 7246695), (5, 4348017), (9, 2415565), (15, 1449339), (19, 1144215), (45, 483113), (47, 462555), (57, 381405), (95, 228843), (141, 154185), (171, 127135), (235, 92511), (285, 76281), (423, 51395), (541, 40185), (705, 30837), (855, 25427), (893, 24345), (1623, 13395), (2115, 10279), (2679, 8115), (2705, 8037), (4465, 4869)]