20690150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:393

約数の個数: 48

約数和(自身を含む): 41924400

約数和(自身を除く): 21234250

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 139, 229, 278, 325, 458, 650, 695, 1145, 1390, 1807, 2290, 2977, 3475, 3614, 5725, 5954, 6950, 9035, 11450, 14885, 18070, 29770, 31831, 45175, 63662, 74425, 90350, 148850, 159155, 318310, 413803, 795775, 827606, 1591550, 2069015, 4138030, 10345075, 20690150]

約数ペア:

[(1, 20690150), (2, 10345075), (5, 4138030), (10, 2069015), (13, 1591550), (25, 827606), (26, 795775), (50, 413803), (65, 318310), (130, 159155), (139, 148850), (229, 90350), (278, 74425), (325, 63662), (458, 45175), (650, 31831), (695, 29770), (1145, 18070), (1390, 14885), (1807, 11450), (2290, 9035), (2977, 6950), (3475, 5954), (3614, 5725)]