25761940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 56201040

約数和(自身を除く): 30439100

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 353, 356, 410, 445, 706, 820, 890, 1412, 1765, 1780, 3530, 3649, 7060, 7298, 14473, 14596, 18245, 28946, 31417, 36490, 57892, 62834, 72365, 72980, 125668, 144730, 157085, 289460, 314170, 628340, 1288097, 2576194, 5152388, 6440485, 12880970, 25761940]

約数ペア:

[(1, 25761940), (2, 12880970), (4, 6440485), (5, 5152388), (10, 2576194), (20, 1288097), (41, 628340), (82, 314170), (89, 289460), (164, 157085), (178, 144730), (205, 125668), (353, 72980), (356, 72365), (410, 62834), (445, 57892), (706, 36490), (820, 31417), (890, 28946), (1412, 18245), (1765, 14596), (1780, 14473), (3530, 7298), (3649, 7060)]