20100720220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{2707}}^1\times {\mathrm{7577}}^1$

素因数の和:10307

約数の個数: 72

約数和(自身を含む): 49127810256

約数和(自身を除く): 29027090036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 2707, 5414, 7577, 10828, 13535, 15154, 18949, 27070, 30308, 37885, 37898, 53039, 54140, 75770, 75796, 94745, 106078, 132643, 151540, 189490, 212156, 265195, 265286, 371273, 378980, 530390, 530572, 663215, 742546, 1060780, 1326430, 1485092, 1856365, 2652860, 3712730, 7425460, 20510939, 41021878, 82043756, 102554695, 143576573, 205109390, 287153146, 410218780, 574306292, 717882865, 1005036011, 1435765730, 2010072022, 2871531460, 4020144044, 5025180055, 10050360110, 20100720220]

約数ペア:

[(1, 20100720220), (2, 10050360110), (4, 5025180055), (5, 4020144044), (7, 2871531460), (10, 2010072022), (14, 1435765730), (20, 1005036011), (28, 717882865), (35, 574306292), (49, 410218780), (70, 287153146), (98, 205109390), (140, 143576573), (196, 102554695), (245, 82043756), (490, 41021878), (980, 20510939), (2707, 7425460), (5414, 3712730), (7577, 2652860), (10828, 1856365), (13535, 1485092), (15154, 1326430), (18949, 1060780), (27070, 742546), (30308, 663215), (37885, 530572), (37898, 530390), (53039, 378980), (54140, 371273), (75770, 265286), (75796, 265195), (94745, 212156), (106078, 189490), (132643, 151540)]