18829700

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 43538880

約数和(自身を除く): 24709180

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 43, 50, 58, 86, 100, 116, 145, 151, 172, 215, 290, 302, 430, 580, 604, 725, 755, 860, 1075, 1247, 1450, 1510, 2150, 2494, 2900, 3020, 3775, 4300, 4379, 4988, 6235, 6493, 7550, 8758, 12470, 12986, 15100, 17516, 21895, 24940, 25972, 31175, 32465, 43790, 62350, 64930, 87580, 109475, 124700, 129860, 162325, 188297, 218950, 324650, 376594, 437900, 649300, 753188, 941485, 1882970, 3765940, 4707425, 9414850, 18829700]

約数ペア:

[(1, 18829700), (2, 9414850), (4, 4707425), (5, 3765940), (10, 1882970), (20, 941485), (25, 753188), (29, 649300), (43, 437900), (50, 376594), (58, 324650), (86, 218950), (100, 188297), (116, 162325), (145, 129860), (151, 124700), (172, 109475), (215, 87580), (290, 64930), (302, 62350), (430, 43790), (580, 32465), (604, 31175), (725, 25972), (755, 24940), (860, 21895), (1075, 17516), (1247, 15100), (1450, 12986), (1510, 12470), (2150, 8758), (2494, 7550), (2900, 6493), (3020, 6235), (3775, 4988), (4300, 4379)]