19853340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25453}}^1$

素因数の和:25478

約数の個数: 48

約数和(自身を含む): 59867808

約数和(自身を除く): 40014468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25453, 50906, 76359, 101812, 127265, 152718, 254530, 305436, 330889, 381795, 509060, 661778, 763590, 992667, 1323556, 1527180, 1654445, 1985334, 3308890, 3970668, 4963335, 6617780, 9926670, 19853340]

約数ペア:

[(1, 19853340), (2, 9926670), (3, 6617780), (4, 4963335), (5, 3970668), (6, 3308890), (10, 1985334), (12, 1654445), (13, 1527180), (15, 1323556), (20, 992667), (26, 763590), (30, 661778), (39, 509060), (52, 381795), (60, 330889), (65, 305436), (78, 254530), (130, 152718), (156, 127265), (195, 101812), (260, 76359), (390, 50906), (780, 25453)]