28003880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:594

約数の個数: 64

約数和(自身を含む): 66960000

約数和(自身を除く): 38956120

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 61, 92, 115, 122, 184, 230, 244, 305, 460, 488, 499, 610, 920, 998, 1220, 1403, 1996, 2440, 2495, 2806, 3992, 4990, 5612, 7015, 9980, 11224, 11477, 14030, 19960, 22954, 28060, 30439, 45908, 56120, 57385, 60878, 91816, 114770, 121756, 152195, 229540, 243512, 304390, 459080, 608780, 700097, 1217560, 1400194, 2800388, 3500485, 5600776, 7000970, 14001940, 28003880]

約数ペア:

[(1, 28003880), (2, 14001940), (4, 7000970), (5, 5600776), (8, 3500485), (10, 2800388), (20, 1400194), (23, 1217560), (40, 700097), (46, 608780), (61, 459080), (92, 304390), (115, 243512), (122, 229540), (184, 152195), (230, 121756), (244, 114770), (305, 91816), (460, 60878), (488, 57385), (499, 56120), (610, 45908), (920, 30439), (998, 28060), (1220, 22954), (1403, 19960), (1996, 14030), (2440, 11477), (2495, 11224), (2806, 9980), (3992, 7015), (4990, 5612)]