72808580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{1657}}^1$

素因数の和:1705

約数の個数: 48

約数和(自身を含む): 165733680

約数和(自身を除く): 92925100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1657, 1690, 2197, 3314, 3380, 4394, 6628, 8285, 8788, 10985, 16570, 21541, 21970, 33140, 43082, 43940, 86164, 107705, 215410, 280033, 430820, 560066, 1120132, 1400165, 2800330, 3640429, 5600660, 7280858, 14561716, 18202145, 36404290, 72808580]

約数ペア:

[(1, 72808580), (2, 36404290), (4, 18202145), (5, 14561716), (10, 7280858), (13, 5600660), (20, 3640429), (26, 2800330), (52, 1400165), (65, 1120132), (130, 560066), (169, 430820), (260, 280033), (338, 215410), (676, 107705), (845, 86164), (1657, 43940), (1690, 43082), (2197, 33140), (3314, 21970), (3380, 21541), (4394, 16570), (6628, 10985), (8285, 8788)]