20457250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 42996096

約数和(自身を除く): 22538846

約数列:

[1, 2, 5, 10, 11, 22, 25, 43, 50, 55, 86, 110, 125, 173, 215, 250, 275, 346, 430, 473, 550, 865, 946, 1075, 1375, 1730, 1903, 2150, 2365, 2750, 3806, 4325, 4730, 5375, 7439, 8650, 9515, 10750, 11825, 14878, 19030, 21625, 23650, 37195, 43250, 47575, 59125, 74390, 81829, 95150, 118250, 163658, 185975, 237875, 371950, 409145, 475750, 818290, 929875, 1859750, 2045725, 4091450, 10228625, 20457250]

約数ペア:

[(1, 20457250), (2, 10228625), (5, 4091450), (10, 2045725), (11, 1859750), (22, 929875), (25, 818290), (43, 475750), (50, 409145), (55, 371950), (86, 237875), (110, 185975), (125, 163658), (173, 118250), (215, 95150), (250, 81829), (275, 74390), (346, 59125), (430, 47575), (473, 43250), (550, 37195), (865, 23650), (946, 21625), (1075, 19030), (1375, 14878), (1730, 11825), (1903, 10750), (2150, 9515), (2365, 8650), (2750, 7439), (3806, 5375), (4325, 4730)]