79539880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4001}}^1$

素因数の和:4090

約数の個数: 64

約数和(自身を含む): 207463680

約数和(自身を除く): 127923800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3976, 4001, 4970, 8002, 9940, 16004, 19880, 20005, 28007, 32008, 40010, 56014, 80020, 112028, 140035, 160040, 224056, 280070, 284071, 560140, 568142, 1120280, 1136284, 1420355, 1988497, 2272568, 2840710, 3976994, 5681420, 7953988, 9942485, 11362840, 15907976, 19884970, 39769940, 79539880]

約数ペア:

[(1, 79539880), (2, 39769940), (4, 19884970), (5, 15907976), (7, 11362840), (8, 9942485), (10, 7953988), (14, 5681420), (20, 3976994), (28, 2840710), (35, 2272568), (40, 1988497), (56, 1420355), (70, 1136284), (71, 1120280), (140, 568142), (142, 560140), (280, 284071), (284, 280070), (355, 224056), (497, 160040), (568, 140035), (710, 112028), (994, 80020), (1420, 56014), (1988, 40010), (2485, 32008), (2840, 28007), (3976, 20005), (4001, 19880), (4970, 16004), (8002, 9940)]