21815568

素因数分解:

$2^4\times 3^5\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:235

約数の個数: 120

約数和(自身を含む): 65718016

約数和(自身を除く): 43902448

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 36, 48, 54, 62, 72, 81, 93, 108, 124, 144, 162, 181, 186, 216, 243, 248, 279, 324, 362, 372, 432, 486, 496, 543, 558, 648, 724, 744, 837, 972, 1086, 1116, 1296, 1448, 1488, 1629, 1674, 1944, 2172, 2232, 2511, 2896, 3258, 3348, 3888, 4344, 4464, 4887, 5022, 5611, 6516, 6696, 7533, 8688, 9774, 10044, 11222, 13032, 13392, 14661, 15066, 16833, 19548, 20088, 22444, 26064, 29322, 30132, 33666, 39096, 40176, 43983, 44888, 50499, 58644, 60264, 67332, 78192, 87966, 89776, 100998, 117288, 120528, 134664, 151497, 175932, 201996, 234576, 269328, 302994, 351864, 403992, 454491, 605988, 703728, 807984, 908982, 1211976, 1363473, 1817964, 2423952, 2726946, 3635928, 5453892, 7271856, 10907784, 21815568]

約数ペア:

[(1, 21815568), (2, 10907784), (3, 7271856), (4, 5453892), (6, 3635928), (8, 2726946), (9, 2423952), (12, 1817964), (16, 1363473), (18, 1211976), (24, 908982), (27, 807984), (31, 703728), (36, 605988), (48, 454491), (54, 403992), (62, 351864), (72, 302994), (81, 269328), (93, 234576), (108, 201996), (124, 175932), (144, 151497), (162, 134664), (181, 120528), (186, 117288), (216, 100998), (243, 89776), (248, 87966), (279, 78192), (324, 67332), (362, 60264), (372, 58644), (432, 50499), (486, 44888), (496, 43983), (543, 40176), (558, 39096), (648, 33666), (724, 30132), (744, 29322), (837, 26064), (972, 22444), (1086, 20088), (1116, 19548), (1296, 16833), (1448, 15066), (1488, 14661), (1629, 13392), (1674, 13032), (1944, 11222), (2172, 10044), (2232, 9774), (2511, 8688), (2896, 7533), (3258, 6696), (3348, 6516), (3888, 5611), (4344, 5022), (4464, 4887)]