20572920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:506

約数の個数: 128

約数和(自身を含む): 70329600

約数和(自身を除く): 49756680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 43, 45, 54, 60, 72, 86, 90, 108, 120, 129, 135, 172, 180, 215, 216, 258, 270, 344, 360, 387, 430, 443, 516, 540, 645, 774, 860, 886, 1032, 1080, 1161, 1290, 1329, 1548, 1720, 1772, 1935, 2215, 2322, 2580, 2658, 3096, 3544, 3870, 3987, 4430, 4644, 5160, 5316, 5805, 6645, 7740, 7974, 8860, 9288, 10632, 11610, 11961, 13290, 15480, 15948, 17720, 19049, 19935, 23220, 23922, 26580, 31896, 38098, 39870, 46440, 47844, 53160, 57147, 59805, 76196, 79740, 95245, 95688, 114294, 119610, 152392, 159480, 171441, 190490, 228588, 239220, 285735, 342882, 380980, 457176, 478440, 514323, 571470, 685764, 761960, 857205, 1028646, 1142940, 1371528, 1714410, 2057292, 2285880, 2571615, 3428820, 4114584, 5143230, 6857640, 10286460, 20572920]

約数ペア:

[(1, 20572920), (2, 10286460), (3, 6857640), (4, 5143230), (5, 4114584), (6, 3428820), (8, 2571615), (9, 2285880), (10, 2057292), (12, 1714410), (15, 1371528), (18, 1142940), (20, 1028646), (24, 857205), (27, 761960), (30, 685764), (36, 571470), (40, 514323), (43, 478440), (45, 457176), (54, 380980), (60, 342882), (72, 285735), (86, 239220), (90, 228588), (108, 190490), (120, 171441), (129, 159480), (135, 152392), (172, 119610), (180, 114294), (215, 95688), (216, 95245), (258, 79740), (270, 76196), (344, 59805), (360, 57147), (387, 53160), (430, 47844), (443, 46440), (516, 39870), (540, 38098), (645, 31896), (774, 26580), (860, 23922), (886, 23220), (1032, 19935), (1080, 19049), (1161, 17720), (1290, 15948), (1329, 15480), (1548, 13290), (1720, 11961), (1772, 11610), (1935, 10632), (2215, 9288), (2322, 8860), (2580, 7974), (2658, 7740), (3096, 6645), (3544, 5805), (3870, 5316), (3987, 5160), (4430, 4644)]