20905160

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{733}}^1$

素因数の和:798

約数の個数: 64

約数和(自身を含む): 50734080

約数和(自身を除く): 29828920

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 92, 115, 124, 155, 184, 230, 248, 310, 460, 620, 713, 733, 920, 1240, 1426, 1466, 2852, 2932, 3565, 3665, 5704, 5864, 7130, 7330, 14260, 14660, 16859, 22723, 28520, 29320, 33718, 45446, 67436, 84295, 90892, 113615, 134872, 168590, 181784, 227230, 337180, 454460, 522629, 674360, 908920, 1045258, 2090516, 2613145, 4181032, 5226290, 10452580, 20905160]

約数ペア:

[(1, 20905160), (2, 10452580), (4, 5226290), (5, 4181032), (8, 2613145), (10, 2090516), (20, 1045258), (23, 908920), (31, 674360), (40, 522629), (46, 454460), (62, 337180), (92, 227230), (115, 181784), (124, 168590), (155, 134872), (184, 113615), (230, 90892), (248, 84295), (310, 67436), (460, 45446), (620, 33718), (713, 29320), (733, 28520), (920, 22723), (1240, 16859), (1426, 14660), (1466, 14260), (2852, 7330), (2932, 7130), (3565, 5864), (3665, 5704)]