21238620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{373}}^1$

素因数の和:471

約数の個数: 96

約数和(自身を含む): 65093952

約数和(自身を除く): 43855332

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 73, 78, 130, 146, 156, 195, 219, 260, 292, 365, 373, 390, 438, 730, 746, 780, 876, 949, 1095, 1119, 1460, 1492, 1865, 1898, 2190, 2238, 2847, 3730, 3796, 4380, 4476, 4745, 4849, 5595, 5694, 7460, 9490, 9698, 11190, 11388, 14235, 14547, 18980, 19396, 22380, 24245, 27229, 28470, 29094, 48490, 54458, 56940, 58188, 72735, 81687, 96980, 108916, 136145, 145470, 163374, 272290, 290940, 326748, 353977, 408435, 544580, 707954, 816870, 1061931, 1415908, 1633740, 1769885, 2123862, 3539770, 4247724, 5309655, 7079540, 10619310, 21238620]

約数ペア:

[(1, 21238620), (2, 10619310), (3, 7079540), (4, 5309655), (5, 4247724), (6, 3539770), (10, 2123862), (12, 1769885), (13, 1633740), (15, 1415908), (20, 1061931), (26, 816870), (30, 707954), (39, 544580), (52, 408435), (60, 353977), (65, 326748), (73, 290940), (78, 272290), (130, 163374), (146, 145470), (156, 136145), (195, 108916), (219, 96980), (260, 81687), (292, 72735), (365, 58188), (373, 56940), (390, 54458), (438, 48490), (730, 29094), (746, 28470), (780, 27229), (876, 24245), (949, 22380), (1095, 19396), (1119, 18980), (1460, 14547), (1492, 14235), (1865, 11388), (1898, 11190), (2190, 9698), (2238, 9490), (2847, 7460), (3730, 5694), (3796, 5595), (4380, 4849), (4476, 4745)]