4028140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 8951040

約数和(自身を除く): 4922900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 73, 89, 124, 146, 155, 178, 292, 310, 356, 365, 445, 620, 730, 890, 1460, 1780, 2263, 2759, 4526, 5518, 6497, 9052, 11036, 11315, 12994, 13795, 22630, 25988, 27590, 32485, 45260, 55180, 64970, 129940, 201407, 402814, 805628, 1007035, 2014070, 4028140]

約数ペア:

[(1, 4028140), (2, 2014070), (4, 1007035), (5, 805628), (10, 402814), (20, 201407), (31, 129940), (62, 64970), (73, 55180), (89, 45260), (124, 32485), (146, 27590), (155, 25988), (178, 22630), (292, 13795), (310, 12994), (356, 11315), (365, 11036), (445, 9052), (620, 6497), (730, 5518), (890, 4526), (1460, 2759), (1780, 2263)]