28656560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1109}}^1$

素因数の和:1158

約数の個数: 80

約数和(自身を含む): 74325600

約数和(自身を除く): 45669040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 1109, 1292, 1360, 1520, 1615, 2218, 2584, 3230, 4436, 5168, 5545, 6460, 8872, 11090, 12920, 17744, 18853, 21071, 22180, 25840, 37706, 42142, 44360, 75412, 84284, 88720, 94265, 105355, 150824, 168568, 188530, 210710, 301648, 337136, 358207, 377060, 421420, 716414, 754120, 842840, 1432828, 1508240, 1685680, 1791035, 2865656, 3582070, 5731312, 7164140, 14328280, 28656560]

約数ペア:

[(1, 28656560), (2, 14328280), (4, 7164140), (5, 5731312), (8, 3582070), (10, 2865656), (16, 1791035), (17, 1685680), (19, 1508240), (20, 1432828), (34, 842840), (38, 754120), (40, 716414), (68, 421420), (76, 377060), (80, 358207), (85, 337136), (95, 301648), (136, 210710), (152, 188530), (170, 168568), (190, 150824), (272, 105355), (304, 94265), (323, 88720), (340, 84284), (380, 75412), (646, 44360), (680, 42142), (760, 37706), (1109, 25840), (1292, 22180), (1360, 21071), (1520, 18853), (1615, 17744), (2218, 12920), (2584, 11090), (3230, 8872), (4436, 6460), (5168, 5545)]