20359425

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 35354880

約数和(自身を除く): 14995455

約数列:

[1, 3, 5, 15, 25, 43, 59, 75, 107, 129, 177, 215, 295, 321, 535, 645, 885, 1075, 1475, 1605, 2537, 2675, 3225, 4425, 4601, 6313, 7611, 8025, 12685, 13803, 18939, 23005, 31565, 38055, 63425, 69015, 94695, 115025, 157825, 190275, 271459, 345075, 473475, 814377, 1357295, 4071885, 6786475, 20359425]

約数ペア:

[(1, 20359425), (3, 6786475), (5, 4071885), (15, 1357295), (25, 814377), (43, 473475), (59, 345075), (75, 271459), (107, 190275), (129, 157825), (177, 115025), (215, 94695), (295, 69015), (321, 63425), (535, 38055), (645, 31565), (885, 23005), (1075, 18939), (1475, 13803), (1605, 12685), (2537, 8025), (2675, 7611), (3225, 6313), (4425, 4601)]