19786712

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 42681600

約数和(自身を除く): 22894888

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 59, 74, 88, 103, 118, 148, 206, 236, 296, 407, 412, 472, 649, 814, 824, 1133, 1298, 1628, 2183, 2266, 2596, 3256, 3811, 4366, 4532, 5192, 6077, 7622, 8732, 9064, 12154, 15244, 17464, 24013, 24308, 30488, 41921, 48026, 48616, 66847, 83842, 96052, 133694, 167684, 192104, 224849, 267388, 335368, 449698, 534776, 899396, 1798792, 2473339, 4946678, 9893356, 19786712]

約数ペア:

[(1, 19786712), (2, 9893356), (4, 4946678), (8, 2473339), (11, 1798792), (22, 899396), (37, 534776), (44, 449698), (59, 335368), (74, 267388), (88, 224849), (103, 192104), (118, 167684), (148, 133694), (206, 96052), (236, 83842), (296, 66847), (407, 48616), (412, 48026), (472, 41921), (649, 30488), (814, 24308), (824, 24013), (1133, 17464), (1298, 15244), (1628, 12154), (2183, 9064), (2266, 8732), (2596, 7622), (3256, 6077), (3811, 5192), (4366, 4532)]