18647456

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:345

約数の個数: 48

約数和(自身を含む): 38388168

約数和(自身を除く): 19740712

約数列:

[1, 2, 4, 8, 16, 32, 41, 61, 82, 122, 164, 233, 244, 328, 466, 488, 656, 932, 976, 1312, 1864, 1952, 2501, 3728, 5002, 7456, 9553, 10004, 14213, 19106, 20008, 28426, 38212, 40016, 56852, 76424, 80032, 113704, 152848, 227408, 305696, 454816, 582733, 1165466, 2330932, 4661864, 9323728, 18647456]

約数ペア:

[(1, 18647456), (2, 9323728), (4, 4661864), (8, 2330932), (16, 1165466), (32, 582733), (41, 454816), (61, 305696), (82, 227408), (122, 152848), (164, 113704), (233, 80032), (244, 76424), (328, 56852), (466, 40016), (488, 38212), (656, 28426), (932, 20008), (976, 19106), (1312, 14213), (1864, 10004), (1952, 9553), (2501, 7456), (3728, 5002)]