42840

素因数分解:

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

素因数の和:41

約数の個数: 96

約数和(自身を含む): 168480

約数和(自身を除く): 125640

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, 476, 504, 510, 595, 612, 630, 680, 714, 765, 840, 952, 1020, 1071, 1190, 1224, 1260, 1428, 1530, 1785, 2040, 2142, 2380, 2520, 2856, 3060, 3570, 4284, 4760, 5355, 6120, 7140, 8568, 10710, 14280, 21420, 42840]

約数ペア:

[(1, 42840), (2, 21420), (3, 14280), (4, 10710), (5, 8568), (6, 7140), (7, 6120), (8, 5355), (9, 4760), (10, 4284), (12, 3570), (14, 3060), (15, 2856), (17, 2520), (18, 2380), (20, 2142), (21, 2040), (24, 1785), (28, 1530), (30, 1428), (34, 1260), (35, 1224), (36, 1190), (40, 1071), (42, 1020), (45, 952), (51, 840), (56, 765), (60, 714), (63, 680), (68, 630), (70, 612), (72, 595), (84, 510), (85, 504), (90, 476), (102, 420), (105, 408), (119, 360), (120, 357), (126, 340), (136, 315), (140, 306), (153, 280), (168, 255), (170, 252), (180, 238), (204, 210)]