18620280

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{821}}^1$

素因数の和:851

約数の個数: 160

約数和(自身を含む): 71612640

約数和(自身を除く): 52992360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 81, 84, 90, 105, 108, 120, 126, 135, 140, 162, 168, 180, 189, 210, 216, 252, 270, 280, 315, 324, 360, 378, 405, 420, 504, 540, 567, 630, 648, 756, 810, 821, 840, 945, 1080, 1134, 1260, 1512, 1620, 1642, 1890, 2268, 2463, 2520, 2835, 3240, 3284, 3780, 4105, 4536, 4926, 5670, 5747, 6568, 7389, 7560, 8210, 9852, 11340, 11494, 12315, 14778, 16420, 17241, 19704, 22167, 22680, 22988, 24630, 28735, 29556, 32840, 34482, 36945, 44334, 45976, 49260, 51723, 57470, 59112, 66501, 68964, 73890, 86205, 88668, 98520, 103446, 110835, 114940, 133002, 137928, 147780, 155169, 172410, 177336, 206892, 221670, 229880, 258615, 266004, 295560, 310338, 332505, 344820, 413784, 443340, 465507, 517230, 532008, 620676, 665010, 689640, 775845, 886680, 931014, 1034460, 1241352, 1330020, 1551690, 1862028, 2068920, 2327535, 2660040, 3103380, 3724056, 4655070, 6206760, 9310140, 18620280]

約数ペア:

[(1, 18620280), (2, 9310140), (3, 6206760), (4, 4655070), (5, 3724056), (6, 3103380), (7, 2660040), (8, 2327535), (9, 2068920), (10, 1862028), (12, 1551690), (14, 1330020), (15, 1241352), (18, 1034460), (20, 931014), (21, 886680), (24, 775845), (27, 689640), (28, 665010), (30, 620676), (35, 532008), (36, 517230), (40, 465507), (42, 443340), (45, 413784), (54, 344820), (56, 332505), (60, 310338), (63, 295560), (70, 266004), (72, 258615), (81, 229880), (84, 221670), (90, 206892), (105, 177336), (108, 172410), (120, 155169), (126, 147780), (135, 137928), (140, 133002), (162, 114940), (168, 110835), (180, 103446), (189, 98520), (210, 88668), (216, 86205), (252, 73890), (270, 68964), (280, 66501), (315, 59112), (324, 57470), (360, 51723), (378, 49260), (405, 45976), (420, 44334), (504, 36945), (540, 34482), (567, 32840), (630, 29556), (648, 28735), (756, 24630), (810, 22988), (821, 22680), (840, 22167), (945, 19704), (1080, 17241), (1134, 16420), (1260, 14778), (1512, 12315), (1620, 11494), (1642, 11340), (1890, 9852), (2268, 8210), (2463, 7560), (2520, 7389), (2835, 6568), (3240, 5747), (3284, 5670), (3780, 4926), (4105, 4536)]