19804080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:179

約数の個数: 160

約数和(自身を含む): 66781440

約数和(自身を除く): 46977360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 43, 48, 57, 60, 76, 80, 86, 95, 101, 114, 120, 129, 152, 172, 190, 202, 215, 228, 240, 258, 285, 303, 304, 344, 380, 404, 430, 456, 505, 516, 570, 606, 645, 688, 760, 808, 817, 860, 912, 1010, 1032, 1140, 1212, 1290, 1515, 1520, 1616, 1634, 1720, 1919, 2020, 2064, 2280, 2424, 2451, 2580, 3030, 3268, 3440, 3838, 4040, 4085, 4343, 4560, 4848, 4902, 5160, 5757, 6060, 6536, 7676, 8080, 8170, 8686, 9595, 9804, 10320, 11514, 12120, 12255, 13029, 13072, 15352, 16340, 17372, 19190, 19608, 21715, 23028, 24240, 24510, 26058, 28785, 30704, 32680, 34744, 38380, 39216, 43430, 46056, 49020, 52116, 57570, 65145, 65360, 69488, 76760, 82517, 86860, 92112, 98040, 104232, 115140, 130290, 153520, 165034, 173720, 196080, 208464, 230280, 247551, 260580, 330068, 347440, 412585, 460560, 495102, 521160, 660136, 825170, 990204, 1042320, 1237755, 1320272, 1650340, 1980408, 2475510, 3300680, 3960816, 4951020, 6601360, 9902040, 19804080]

約数ペア:

[(1, 19804080), (2, 9902040), (3, 6601360), (4, 4951020), (5, 3960816), (6, 3300680), (8, 2475510), (10, 1980408), (12, 1650340), (15, 1320272), (16, 1237755), (19, 1042320), (20, 990204), (24, 825170), (30, 660136), (38, 521160), (40, 495102), (43, 460560), (48, 412585), (57, 347440), (60, 330068), (76, 260580), (80, 247551), (86, 230280), (95, 208464), (101, 196080), (114, 173720), (120, 165034), (129, 153520), (152, 130290), (172, 115140), (190, 104232), (202, 98040), (215, 92112), (228, 86860), (240, 82517), (258, 76760), (285, 69488), (303, 65360), (304, 65145), (344, 57570), (380, 52116), (404, 49020), (430, 46056), (456, 43430), (505, 39216), (516, 38380), (570, 34744), (606, 32680), (645, 30704), (688, 28785), (760, 26058), (808, 24510), (817, 24240), (860, 23028), (912, 21715), (1010, 19608), (1032, 19190), (1140, 17372), (1212, 16340), (1290, 15352), (1515, 13072), (1520, 13029), (1616, 12255), (1634, 12120), (1720, 11514), (1919, 10320), (2020, 9804), (2064, 9595), (2280, 8686), (2424, 8170), (2451, 8080), (2580, 7676), (3030, 6536), (3268, 6060), (3440, 5757), (3838, 5160), (4040, 4902), (4085, 4848), (4343, 4560)]