21791220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{241}}^1$

素因数の和:401

約数の個数: 96

約数和(自身を含む): 67326336

約数和(自身を除く): 45535116

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 137, 165, 220, 241, 274, 330, 411, 482, 548, 660, 685, 723, 822, 964, 1205, 1370, 1446, 1507, 1644, 2055, 2410, 2651, 2740, 2892, 3014, 3615, 4110, 4521, 4820, 5302, 6028, 7230, 7535, 7953, 8220, 9042, 10604, 13255, 14460, 15070, 15906, 18084, 22605, 26510, 30140, 31812, 33017, 39765, 45210, 53020, 66034, 79530, 90420, 99051, 132068, 159060, 165085, 198102, 330170, 363187, 396204, 495255, 660340, 726374, 990510, 1089561, 1452748, 1815935, 1981020, 2179122, 3631870, 4358244, 5447805, 7263740, 10895610, 21791220]

約数ペア:

[(1, 21791220), (2, 10895610), (3, 7263740), (4, 5447805), (5, 4358244), (6, 3631870), (10, 2179122), (11, 1981020), (12, 1815935), (15, 1452748), (20, 1089561), (22, 990510), (30, 726374), (33, 660340), (44, 495255), (55, 396204), (60, 363187), (66, 330170), (110, 198102), (132, 165085), (137, 159060), (165, 132068), (220, 99051), (241, 90420), (274, 79530), (330, 66034), (411, 53020), (482, 45210), (548, 39765), (660, 33017), (685, 31812), (723, 30140), (822, 26510), (964, 22605), (1205, 18084), (1370, 15906), (1446, 15070), (1507, 14460), (1644, 13255), (2055, 10604), (2410, 9042), (2651, 8220), (2740, 7953), (2892, 7535), (3014, 7230), (3615, 6028), (4110, 5302), (4521, 4820)]