21220605

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 45826560

約数和(自身を除く): 24605955

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 29, 35, 45, 63, 69, 87, 101, 105, 115, 145, 161, 203, 207, 261, 303, 315, 345, 435, 483, 505, 609, 667, 707, 805, 909, 1015, 1035, 1305, 1449, 1515, 1827, 2001, 2121, 2323, 2415, 2929, 3045, 3335, 3535, 4545, 4669, 6003, 6363, 6969, 7245, 8787, 9135, 10005, 10605, 11615, 14007, 14645, 16261, 20503, 20907, 23345, 26361, 30015, 31815, 34845, 42021, 43935, 48783, 61509, 67367, 70035, 81305, 102515, 104535, 131805, 146349, 184527, 202101, 210105, 243915, 307545, 336835, 471569, 606303, 731745, 922635, 1010505, 1414707, 2357845, 3031515, 4244121, 7073535, 21220605]

約数ペア:

[(1, 21220605), (3, 7073535), (5, 4244121), (7, 3031515), (9, 2357845), (15, 1414707), (21, 1010505), (23, 922635), (29, 731745), (35, 606303), (45, 471569), (63, 336835), (69, 307545), (87, 243915), (101, 210105), (105, 202101), (115, 184527), (145, 146349), (161, 131805), (203, 104535), (207, 102515), (261, 81305), (303, 70035), (315, 67367), (345, 61509), (435, 48783), (483, 43935), (505, 42021), (609, 34845), (667, 31815), (707, 30015), (805, 26361), (909, 23345), (1015, 20907), (1035, 20503), (1305, 16261), (1449, 14645), (1515, 14007), (1827, 11615), (2001, 10605), (2121, 10005), (2323, 9135), (2415, 8787), (2929, 7245), (3045, 6969), (3335, 6363), (3535, 6003), (4545, 4669)]