18878210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7643}}^1$

素因数の和:7682

約数の個数: 32

約数和(自身を含む): 38525760

約数和(自身を除く): 19647550

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 7643, 15286, 38215, 76430, 99359, 145217, 198718, 290434, 496795, 726085, 993590, 1452170, 1887821, 3775642, 9439105, 18878210]

約数ペア:

[(1, 18878210), (2, 9439105), (5, 3775642), (10, 1887821), (13, 1452170), (19, 993590), (26, 726085), (38, 496795), (65, 290434), (95, 198718), (130, 145217), (190, 99359), (247, 76430), (494, 38215), (1235, 15286), (2470, 7643)]