19804320

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{809}}^1$

素因数の和:847

約数の個数: 144

約数和(自身を含む): 71646120

約数和(自身を除く): 51841800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 204, 240, 255, 272, 288, 306, 340, 360, 408, 480, 510, 544, 612, 680, 720, 765, 809, 816, 1020, 1224, 1360, 1440, 1530, 1618, 1632, 2040, 2427, 2448, 2720, 3060, 3236, 4045, 4080, 4854, 4896, 6120, 6472, 7281, 8090, 8160, 9708, 12135, 12240, 12944, 13753, 14562, 16180, 19416, 24270, 24480, 25888, 27506, 29124, 32360, 36405, 38832, 41259, 48540, 55012, 58248, 64720, 68765, 72810, 77664, 82518, 97080, 110024, 116496, 123777, 129440, 137530, 145620, 165036, 194160, 206295, 220048, 232992, 247554, 275060, 291240, 330072, 388320, 412590, 440096, 495108, 550120, 582480, 618885, 660144, 825180, 990216, 1100240, 1164960, 1237770, 1320288, 1650360, 1980432, 2200480, 2475540, 3300720, 3960864, 4951080, 6601440, 9902160, 19804320]

約数ペア:

[(1, 19804320), (2, 9902160), (3, 6601440), (4, 4951080), (5, 3960864), (6, 3300720), (8, 2475540), (9, 2200480), (10, 1980432), (12, 1650360), (15, 1320288), (16, 1237770), (17, 1164960), (18, 1100240), (20, 990216), (24, 825180), (30, 660144), (32, 618885), (34, 582480), (36, 550120), (40, 495108), (45, 440096), (48, 412590), (51, 388320), (60, 330072), (68, 291240), (72, 275060), (80, 247554), (85, 232992), (90, 220048), (96, 206295), (102, 194160), (120, 165036), (136, 145620), (144, 137530), (153, 129440), (160, 123777), (170, 116496), (180, 110024), (204, 97080), (240, 82518), (255, 77664), (272, 72810), (288, 68765), (306, 64720), (340, 58248), (360, 55012), (408, 48540), (480, 41259), (510, 38832), (544, 36405), (612, 32360), (680, 29124), (720, 27506), (765, 25888), (809, 24480), (816, 24270), (1020, 19416), (1224, 16180), (1360, 14562), (1440, 13753), (1530, 12944), (1618, 12240), (1632, 12135), (2040, 9708), (2427, 8160), (2448, 8090), (2720, 7281), (3060, 6472), (3236, 6120), (4045, 4896), (4080, 4854)]