21784620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2539}}^1$

素因数の和:2575

約数の個数: 96

約数和(自身を含む): 71688960

約数和(自身を除く): 49904340

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 195, 220, 260, 286, 330, 390, 429, 572, 660, 715, 780, 858, 1430, 1716, 2145, 2539, 2860, 4290, 5078, 7617, 8580, 10156, 12695, 15234, 25390, 27929, 30468, 33007, 38085, 50780, 55858, 66014, 76170, 83787, 99021, 111716, 132028, 139645, 152340, 165035, 167574, 198042, 279290, 330070, 335148, 363077, 396084, 418935, 495105, 558580, 660140, 726154, 837870, 990210, 1089231, 1452308, 1675740, 1815385, 1980420, 2178462, 3630770, 4356924, 5446155, 7261540, 10892310, 21784620]

約数ペア:

[(1, 21784620), (2, 10892310), (3, 7261540), (4, 5446155), (5, 4356924), (6, 3630770), (10, 2178462), (11, 1980420), (12, 1815385), (13, 1675740), (15, 1452308), (20, 1089231), (22, 990210), (26, 837870), (30, 726154), (33, 660140), (39, 558580), (44, 495105), (52, 418935), (55, 396084), (60, 363077), (65, 335148), (66, 330070), (78, 279290), (110, 198042), (130, 167574), (132, 165035), (143, 152340), (156, 139645), (165, 132028), (195, 111716), (220, 99021), (260, 83787), (286, 76170), (330, 66014), (390, 55858), (429, 50780), (572, 38085), (660, 33007), (715, 30468), (780, 27929), (858, 25390), (1430, 15234), (1716, 12695), (2145, 10156), (2539, 8580), (2860, 7617), (4290, 5078)]