18871020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{881}}^1$

素因数の和:920

約数の個数: 144

約数和(自身を含む): 69346368

約数和(自身を除く): 50475348

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 51, 60, 63, 68, 70, 84, 85, 90, 102, 105, 119, 126, 140, 153, 170, 180, 204, 210, 238, 252, 255, 306, 315, 340, 357, 420, 476, 510, 595, 612, 630, 714, 765, 881, 1020, 1071, 1190, 1260, 1428, 1530, 1762, 1785, 2142, 2380, 2643, 3060, 3524, 3570, 4284, 4405, 5286, 5355, 6167, 7140, 7929, 8810, 10572, 10710, 12334, 13215, 14977, 15858, 17620, 18501, 21420, 24668, 26430, 29954, 30835, 31716, 37002, 39645, 44931, 52860, 55503, 59908, 61670, 74004, 74885, 79290, 89862, 92505, 104839, 111006, 123340, 134793, 149770, 158580, 179724, 185010, 209678, 222012, 224655, 269586, 277515, 299540, 314517, 370020, 419356, 449310, 524195, 539172, 555030, 629034, 673965, 898620, 943551, 1048390, 1110060, 1258068, 1347930, 1572585, 1887102, 2096780, 2695860, 3145170, 3774204, 4717755, 6290340, 9435510, 18871020]

約数ペア:

[(1, 18871020), (2, 9435510), (3, 6290340), (4, 4717755), (5, 3774204), (6, 3145170), (7, 2695860), (9, 2096780), (10, 1887102), (12, 1572585), (14, 1347930), (15, 1258068), (17, 1110060), (18, 1048390), (20, 943551), (21, 898620), (28, 673965), (30, 629034), (34, 555030), (35, 539172), (36, 524195), (42, 449310), (45, 419356), (51, 370020), (60, 314517), (63, 299540), (68, 277515), (70, 269586), (84, 224655), (85, 222012), (90, 209678), (102, 185010), (105, 179724), (119, 158580), (126, 149770), (140, 134793), (153, 123340), (170, 111006), (180, 104839), (204, 92505), (210, 89862), (238, 79290), (252, 74885), (255, 74004), (306, 61670), (315, 59908), (340, 55503), (357, 52860), (420, 44931), (476, 39645), (510, 37002), (595, 31716), (612, 30835), (630, 29954), (714, 26430), (765, 24668), (881, 21420), (1020, 18501), (1071, 17620), (1190, 15858), (1260, 14977), (1428, 13215), (1530, 12334), (1762, 10710), (1785, 10572), (2142, 8810), (2380, 7929), (2643, 7140), (3060, 6167), (3524, 5355), (3570, 5286), (4284, 4405)]