21031726460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{61673}}^1$

素因数の和:61775

約数の個数: 72

約数和(自身を含む): 47713473360

約数和(自身を除く): 26681746900

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 59, 68, 85, 118, 170, 236, 289, 295, 340, 578, 590, 1003, 1156, 1180, 1445, 2006, 2890, 4012, 5015, 5780, 10030, 17051, 20060, 34102, 61673, 68204, 85255, 123346, 170510, 246692, 308365, 341020, 616730, 1048441, 1233460, 2096882, 3638707, 4193764, 5242205, 7277414, 10484410, 14554828, 17823497, 18193535, 20968820, 35646994, 36387070, 61858019, 71293988, 72774140, 89117485, 123716038, 178234970, 247432076, 309290095, 356469940, 618580190, 1051586323, 1237160380, 2103172646, 4206345292, 5257931615, 10515863230, 21031726460]

約数ペア:

[(1, 21031726460), (2, 10515863230), (4, 5257931615), (5, 4206345292), (10, 2103172646), (17, 1237160380), (20, 1051586323), (34, 618580190), (59, 356469940), (68, 309290095), (85, 247432076), (118, 178234970), (170, 123716038), (236, 89117485), (289, 72774140), (295, 71293988), (340, 61858019), (578, 36387070), (590, 35646994), (1003, 20968820), (1156, 18193535), (1180, 17823497), (1445, 14554828), (2006, 10484410), (2890, 7277414), (4012, 5242205), (5015, 4193764), (5780, 3638707), (10030, 2096882), (17051, 1233460), (20060, 1048441), (34102, 616730), (61673, 341020), (68204, 308365), (85255, 246692), (123346, 170510)]