17819320

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 41738400

約数和(自身を除く): 23919080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 67, 109, 122, 134, 218, 244, 268, 305, 335, 436, 488, 536, 545, 610, 670, 872, 1090, 1220, 1340, 2180, 2440, 2680, 4087, 4360, 6649, 7303, 8174, 13298, 14606, 16348, 20435, 26596, 29212, 32696, 33245, 36515, 40870, 53192, 58424, 66490, 73030, 81740, 132980, 146060, 163480, 265960, 292120, 445483, 890966, 1781932, 2227415, 3563864, 4454830, 8909660, 17819320]

約数ペア:

[(1, 17819320), (2, 8909660), (4, 4454830), (5, 3563864), (8, 2227415), (10, 1781932), (20, 890966), (40, 445483), (61, 292120), (67, 265960), (109, 163480), (122, 146060), (134, 132980), (218, 81740), (244, 73030), (268, 66490), (305, 58424), (335, 53192), (436, 40870), (488, 36515), (536, 33245), (545, 32696), (610, 29212), (670, 26596), (872, 20435), (1090, 16348), (1220, 14606), (1340, 13298), (2180, 8174), (2440, 7303), (2680, 6649), (4087, 4360)]