20470720

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:158

約数の個数: 112

約数和(自身を含む): 53327808

約数和(自身を除く): 32857088

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 53, 64, 68, 71, 80, 85, 106, 136, 142, 160, 170, 212, 265, 272, 284, 320, 340, 355, 424, 530, 544, 568, 680, 710, 848, 901, 1060, 1088, 1136, 1207, 1360, 1420, 1696, 1802, 2120, 2272, 2414, 2720, 2840, 3392, 3604, 3763, 4240, 4505, 4544, 4828, 5440, 5680, 6035, 7208, 7526, 8480, 9010, 9656, 11360, 12070, 14416, 15052, 16960, 18020, 18815, 19312, 22720, 24140, 28832, 30104, 36040, 37630, 38624, 48280, 57664, 60208, 63971, 72080, 75260, 77248, 96560, 120416, 127942, 144160, 150520, 193120, 240832, 255884, 288320, 301040, 319855, 386240, 511768, 602080, 639710, 1023536, 1204160, 1279420, 2047072, 2558840, 4094144, 5117680, 10235360, 20470720]

約数ペア:

[(1, 20470720), (2, 10235360), (4, 5117680), (5, 4094144), (8, 2558840), (10, 2047072), (16, 1279420), (17, 1204160), (20, 1023536), (32, 639710), (34, 602080), (40, 511768), (53, 386240), (64, 319855), (68, 301040), (71, 288320), (80, 255884), (85, 240832), (106, 193120), (136, 150520), (142, 144160), (160, 127942), (170, 120416), (212, 96560), (265, 77248), (272, 75260), (284, 72080), (320, 63971), (340, 60208), (355, 57664), (424, 48280), (530, 38624), (544, 37630), (568, 36040), (680, 30104), (710, 28832), (848, 24140), (901, 22720), (1060, 19312), (1088, 18815), (1136, 18020), (1207, 16960), (1360, 15052), (1420, 14416), (1696, 12070), (1802, 11360), (2120, 9656), (2272, 9010), (2414, 8480), (2720, 7526), (2840, 7208), (3392, 6035), (3604, 5680), (3763, 5440), (4240, 4828), (4505, 4544)]