21221784

素因数分解:

$2^3\times 3^3\times {\mathrm{19}}^1\times {\mathrm{5171}}^1$

素因数の和:5205

約数の個数: 64

約数和(自身を含む): 62064000

約数和(自身を除く): 40842216

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 36, 38, 54, 57, 72, 76, 108, 114, 152, 171, 216, 228, 342, 456, 513, 684, 1026, 1368, 2052, 4104, 5171, 10342, 15513, 20684, 31026, 41368, 46539, 62052, 93078, 98249, 124104, 139617, 186156, 196498, 279234, 294747, 372312, 392996, 558468, 589494, 785992, 884241, 1116936, 1178988, 1768482, 2357976, 2652723, 3536964, 5305446, 7073928, 10610892, 21221784]

約数ペア:

[(1, 21221784), (2, 10610892), (3, 7073928), (4, 5305446), (6, 3536964), (8, 2652723), (9, 2357976), (12, 1768482), (18, 1178988), (19, 1116936), (24, 884241), (27, 785992), (36, 589494), (38, 558468), (54, 392996), (57, 372312), (72, 294747), (76, 279234), (108, 196498), (114, 186156), (152, 139617), (171, 124104), (216, 98249), (228, 93078), (342, 62052), (456, 46539), (513, 41368), (684, 31026), (1026, 20684), (1368, 15513), (2052, 10342), (4104, 5171)]