21365388

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:515

約数の個数: 72

約数和(自身を含む): 59457216

約数和(自身を除く): 38091828

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 163, 198, 326, 331, 396, 489, 652, 662, 978, 993, 1324, 1467, 1793, 1956, 1986, 2934, 2979, 3586, 3641, 3972, 5379, 5868, 5958, 7172, 7282, 10758, 10923, 11916, 14564, 16137, 21516, 21846, 32274, 32769, 43692, 53953, 64548, 65538, 107906, 131076, 161859, 215812, 323718, 485577, 593483, 647436, 971154, 1186966, 1780449, 1942308, 2373932, 3560898, 5341347, 7121796, 10682694, 21365388]

約数ペア:

[(1, 21365388), (2, 10682694), (3, 7121796), (4, 5341347), (6, 3560898), (9, 2373932), (11, 1942308), (12, 1780449), (18, 1186966), (22, 971154), (33, 647436), (36, 593483), (44, 485577), (66, 323718), (99, 215812), (132, 161859), (163, 131076), (198, 107906), (326, 65538), (331, 64548), (396, 53953), (489, 43692), (652, 32769), (662, 32274), (978, 21846), (993, 21516), (1324, 16137), (1467, 14564), (1793, 11916), (1956, 10923), (1986, 10758), (2934, 7282), (2979, 7172), (3586, 5958), (3641, 5868), (3972, 5379)]