19945920

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:362

約数の個数: 112

約数和(自身を含む): 64373760

約数和(自身を除く): 44427840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 79, 80, 96, 120, 158, 160, 192, 237, 240, 263, 316, 320, 395, 474, 480, 526, 632, 789, 790, 948, 960, 1052, 1185, 1264, 1315, 1578, 1580, 1896, 2104, 2370, 2528, 2630, 3156, 3160, 3792, 3945, 4208, 4740, 5056, 5260, 6312, 6320, 7584, 7890, 8416, 9480, 10520, 12624, 12640, 15168, 15780, 16832, 18960, 20777, 21040, 25248, 25280, 31560, 37920, 41554, 42080, 50496, 62331, 63120, 75840, 83108, 84160, 103885, 124662, 126240, 166216, 207770, 249324, 252480, 311655, 332432, 415540, 498648, 623310, 664864, 831080, 997296, 1246620, 1329728, 1662160, 1994592, 2493240, 3324320, 3989184, 4986480, 6648640, 9972960, 19945920]

約数ペア:

[(1, 19945920), (2, 9972960), (3, 6648640), (4, 4986480), (5, 3989184), (6, 3324320), (8, 2493240), (10, 1994592), (12, 1662160), (15, 1329728), (16, 1246620), (20, 997296), (24, 831080), (30, 664864), (32, 623310), (40, 498648), (48, 415540), (60, 332432), (64, 311655), (79, 252480), (80, 249324), (96, 207770), (120, 166216), (158, 126240), (160, 124662), (192, 103885), (237, 84160), (240, 83108), (263, 75840), (316, 63120), (320, 62331), (395, 50496), (474, 42080), (480, 41554), (526, 37920), (632, 31560), (789, 25280), (790, 25248), (948, 21040), (960, 20777), (1052, 18960), (1185, 16832), (1264, 15780), (1315, 15168), (1578, 12640), (1580, 12624), (1896, 10520), (2104, 9480), (2370, 8416), (2528, 7890), (2630, 7584), (3156, 6320), (3160, 6312), (3792, 5260), (3945, 5056), (4208, 4740)]