31487920

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:302

約数の個数: 80

約数和(自身を含む): 77584320

約数和(自身を除く): 46096400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 109, 115, 157, 184, 218, 230, 314, 368, 436, 460, 545, 628, 785, 872, 920, 1090, 1256, 1570, 1744, 1840, 2180, 2507, 2512, 3140, 3611, 4360, 5014, 6280, 7222, 8720, 10028, 12535, 12560, 14444, 17113, 18055, 20056, 25070, 28888, 34226, 36110, 40112, 50140, 57776, 68452, 72220, 85565, 100280, 136904, 144440, 171130, 200560, 273808, 288880, 342260, 393599, 684520, 787198, 1369040, 1574396, 1967995, 3148792, 3935990, 6297584, 7871980, 15743960, 31487920]

約数ペア:

[(1, 31487920), (2, 15743960), (4, 7871980), (5, 6297584), (8, 3935990), (10, 3148792), (16, 1967995), (20, 1574396), (23, 1369040), (40, 787198), (46, 684520), (80, 393599), (92, 342260), (109, 288880), (115, 273808), (157, 200560), (184, 171130), (218, 144440), (230, 136904), (314, 100280), (368, 85565), (436, 72220), (460, 68452), (545, 57776), (628, 50140), (785, 40112), (872, 36110), (920, 34226), (1090, 28888), (1256, 25070), (1570, 20056), (1744, 18055), (1840, 17113), (2180, 14444), (2507, 12560), (2512, 12535), (3140, 10028), (3611, 8720), (4360, 7222), (5014, 6280)]