81988560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4951}}^1$

素因数の和:4993

約数の個数: 120

約数和(自身を含む): 287374464

約数和(自身を除く): 205385904

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1104, 1380, 1656, 1840, 2070, 2760, 3312, 4140, 4951, 5520, 8280, 9902, 14853, 16560, 19804, 24755, 29706, 39608, 44559, 49510, 59412, 74265, 79216, 89118, 99020, 113873, 118824, 148530, 178236, 198040, 222795, 227746, 237648, 297060, 341619, 356472, 396080, 445590, 455492, 569365, 594120, 683238, 712944, 891180, 910984, 1024857, 1138730, 1188240, 1366476, 1708095, 1782360, 1821968, 2049714, 2277460, 2732952, 3416190, 3564720, 4099428, 4554920, 5124285, 5465904, 6832380, 8198856, 9109840, 10248570, 13664760, 16397712, 20497140, 27329520, 40994280, 81988560]

約数ペア:

[(1, 81988560), (2, 40994280), (3, 27329520), (4, 20497140), (5, 16397712), (6, 13664760), (8, 10248570), (9, 9109840), (10, 8198856), (12, 6832380), (15, 5465904), (16, 5124285), (18, 4554920), (20, 4099428), (23, 3564720), (24, 3416190), (30, 2732952), (36, 2277460), (40, 2049714), (45, 1821968), (46, 1782360), (48, 1708095), (60, 1366476), (69, 1188240), (72, 1138730), (80, 1024857), (90, 910984), (92, 891180), (115, 712944), (120, 683238), (138, 594120), (144, 569365), (180, 455492), (184, 445590), (207, 396080), (230, 356472), (240, 341619), (276, 297060), (345, 237648), (360, 227746), (368, 222795), (414, 198040), (460, 178236), (552, 148530), (690, 118824), (720, 113873), (828, 99020), (920, 89118), (1035, 79216), (1104, 74265), (1380, 59412), (1656, 49510), (1840, 44559), (2070, 39608), (2760, 29706), (3312, 24755), (4140, 19804), (4951, 16560), (5520, 14853), (8280, 9902)]