18978120

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{443}}^1$

素因数の和:484

約数の個数: 192

約数和(自身を含む): 74805120

約数和(自身を除く): 55827000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 30, 34, 35, 36, 40, 42, 45, 51, 56, 60, 63, 68, 70, 72, 84, 85, 90, 102, 105, 119, 120, 126, 136, 140, 153, 168, 170, 180, 204, 210, 238, 252, 255, 280, 306, 315, 340, 357, 360, 408, 420, 443, 476, 504, 510, 595, 612, 630, 680, 714, 765, 840, 886, 952, 1020, 1071, 1190, 1224, 1260, 1329, 1428, 1530, 1772, 1785, 2040, 2142, 2215, 2380, 2520, 2658, 2856, 3060, 3101, 3544, 3570, 3987, 4284, 4430, 4760, 5316, 5355, 6120, 6202, 6645, 7140, 7531, 7974, 8568, 8860, 9303, 10632, 10710, 12404, 13290, 14280, 15062, 15505, 15948, 17720, 18606, 19935, 21420, 22593, 24808, 26580, 27909, 30124, 31010, 31896, 37212, 37655, 39870, 42840, 45186, 46515, 52717, 53160, 55818, 60248, 62020, 67779, 74424, 75310, 79740, 90372, 93030, 105434, 111636, 112965, 124040, 135558, 139545, 150620, 158151, 159480, 180744, 186060, 210868, 223272, 225930, 263585, 271116, 279090, 301240, 316302, 338895, 372120, 421736, 451860, 474453, 527170, 542232, 558180, 632604, 677790, 790755, 903720, 948906, 1054340, 1116360, 1265208, 1355580, 1581510, 1897812, 2108680, 2372265, 2711160, 3163020, 3795624, 4744530, 6326040, 9489060, 18978120]

約数ペア:

[(1, 18978120), (2, 9489060), (3, 6326040), (4, 4744530), (5, 3795624), (6, 3163020), (7, 2711160), (8, 2372265), (9, 2108680), (10, 1897812), (12, 1581510), (14, 1355580), (15, 1265208), (17, 1116360), (18, 1054340), (20, 948906), (21, 903720), (24, 790755), (28, 677790), (30, 632604), (34, 558180), (35, 542232), (36, 527170), (40, 474453), (42, 451860), (45, 421736), (51, 372120), (56, 338895), (60, 316302), (63, 301240), (68, 279090), (70, 271116), (72, 263585), (84, 225930), (85, 223272), (90, 210868), (102, 186060), (105, 180744), (119, 159480), (120, 158151), (126, 150620), (136, 139545), (140, 135558), (153, 124040), (168, 112965), (170, 111636), (180, 105434), (204, 93030), (210, 90372), (238, 79740), (252, 75310), (255, 74424), (280, 67779), (306, 62020), (315, 60248), (340, 55818), (357, 53160), (360, 52717), (408, 46515), (420, 45186), (443, 42840), (476, 39870), (504, 37655), (510, 37212), (595, 31896), (612, 31010), (630, 30124), (680, 27909), (714, 26580), (765, 24808), (840, 22593), (886, 21420), (952, 19935), (1020, 18606), (1071, 17720), (1190, 15948), (1224, 15505), (1260, 15062), (1329, 14280), (1428, 13290), (1530, 12404), (1772, 10710), (1785, 10632), (2040, 9303), (2142, 8860), (2215, 8568), (2380, 7974), (2520, 7531), (2658, 7140), (2856, 6645), (3060, 6202), (3101, 6120), (3544, 5355), (3570, 5316), (3987, 4760), (4284, 4430)]