21463020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:164

約数の個数: 144

約数和(自身を含む): 69189120

約数和(自身を除く): 47726100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 47, 59, 60, 86, 90, 94, 118, 129, 141, 172, 177, 180, 188, 215, 235, 236, 258, 282, 295, 354, 387, 423, 430, 470, 516, 531, 564, 590, 645, 705, 708, 774, 846, 860, 885, 940, 1062, 1180, 1290, 1410, 1548, 1692, 1770, 1935, 2021, 2115, 2124, 2537, 2580, 2655, 2773, 2820, 3540, 3870, 4042, 4230, 5074, 5310, 5546, 6063, 7611, 7740, 8084, 8319, 8460, 10105, 10148, 10620, 11092, 12126, 12685, 13865, 15222, 16638, 18189, 20210, 22833, 24252, 24957, 25370, 27730, 30315, 30444, 33276, 36378, 38055, 40420, 41595, 45666, 49914, 50740, 55460, 60630, 72756, 76110, 83190, 90945, 91332, 99828, 114165, 119239, 121260, 124785, 152220, 166380, 181890, 228330, 238478, 249570, 357717, 363780, 456660, 476956, 499140, 596195, 715434, 1073151, 1192390, 1430868, 1788585, 2146302, 2384780, 3577170, 4292604, 5365755, 7154340, 10731510, 21463020]

約数ペア:

[(1, 21463020), (2, 10731510), (3, 7154340), (4, 5365755), (5, 4292604), (6, 3577170), (9, 2384780), (10, 2146302), (12, 1788585), (15, 1430868), (18, 1192390), (20, 1073151), (30, 715434), (36, 596195), (43, 499140), (45, 476956), (47, 456660), (59, 363780), (60, 357717), (86, 249570), (90, 238478), (94, 228330), (118, 181890), (129, 166380), (141, 152220), (172, 124785), (177, 121260), (180, 119239), (188, 114165), (215, 99828), (235, 91332), (236, 90945), (258, 83190), (282, 76110), (295, 72756), (354, 60630), (387, 55460), (423, 50740), (430, 49914), (470, 45666), (516, 41595), (531, 40420), (564, 38055), (590, 36378), (645, 33276), (705, 30444), (708, 30315), (774, 27730), (846, 25370), (860, 24957), (885, 24252), (940, 22833), (1062, 20210), (1180, 18189), (1290, 16638), (1410, 15222), (1548, 13865), (1692, 12685), (1770, 12126), (1935, 11092), (2021, 10620), (2115, 10148), (2124, 10105), (2537, 8460), (2580, 8319), (2655, 8084), (2773, 7740), (2820, 7611), (3540, 6063), (3870, 5546), (4042, 5310), (4230, 5074)]