21628980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1123}}^1$

素因数の和:1245

約数の個数: 72

約数和(自身を含む): 66280032

約数和(自身を除く): 44651052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 107, 180, 214, 321, 428, 535, 642, 963, 1070, 1123, 1284, 1605, 1926, 2140, 2246, 3210, 3369, 3852, 4492, 4815, 5615, 6420, 6738, 9630, 10107, 11230, 13476, 16845, 19260, 20214, 22460, 33690, 40428, 50535, 67380, 101070, 120161, 202140, 240322, 360483, 480644, 600805, 720966, 1081449, 1201610, 1441932, 1802415, 2162898, 2403220, 3604830, 4325796, 5407245, 7209660, 10814490, 21628980]

約数ペア:

[(1, 21628980), (2, 10814490), (3, 7209660), (4, 5407245), (5, 4325796), (6, 3604830), (9, 2403220), (10, 2162898), (12, 1802415), (15, 1441932), (18, 1201610), (20, 1081449), (30, 720966), (36, 600805), (45, 480644), (60, 360483), (90, 240322), (107, 202140), (180, 120161), (214, 101070), (321, 67380), (428, 50535), (535, 40428), (642, 33690), (963, 22460), (1070, 20214), (1123, 19260), (1284, 16845), (1605, 13476), (1926, 11230), (2140, 10107), (2246, 9630), (3210, 6738), (3369, 6420), (3852, 5615), (4492, 4815)]