18913860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{883}}^1$

素因数の和:922

約数の個数: 144

約数和(自身を含む): 69503616

約数和(自身を除く): 50589756

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, 883, 1020, 1071, 1190, 1260, 1428, 1530, 1766, 1785, 2142, 2380, 2649, 3060, 3532, 3570, 4284, 4415, 5298, 5355, 6181, 7140, 7947, 8830, 10596, 10710, 12362, 13245, 15011, 15894, 17660, 18543, 21420, 24724, 26490, 30022, 30905, 31788, 37086, 39735, 45033, 52980, 55629, 60044, 61810, 74172, 75055, 79470, 90066, 92715, 105077, 111258, 123620, 135099, 150110, 158940, 180132, 185430, 210154, 222516, 225165, 270198, 278145, 300220, 315231, 370860, 420308, 450330, 525385, 540396, 556290, 630462, 675495, 900660, 945693, 1050770, 1112580, 1260924, 1350990, 1576155, 1891386, 2101540, 2701980, 3152310, 3782772, 4728465, 6304620, 9456930, 18913860]

約数ペア:

[(1, 18913860), (2, 9456930), (3, 6304620), (4, 4728465), (5, 3782772), (6, 3152310), (7, 2701980), (9, 2101540), (10, 1891386), (12, 1576155), (14, 1350990), (15, 1260924), (17, 1112580), (18, 1050770), (20, 945693), (21, 900660), (28, 675495), (30, 630462), (34, 556290), (35, 540396), (36, 525385), (42, 450330), (45, 420308), (51, 370860), (60, 315231), (63, 300220), (68, 278145), (70, 270198), (84, 225165), (85, 222516), (90, 210154), (102, 185430), (105, 180132), (119, 158940), (126, 150110), (140, 135099), (153, 123620), (170, 111258), (180, 105077), (204, 92715), (210, 90066), (238, 79470), (252, 75055), (255, 74172), (306, 61810), (315, 60044), (340, 55629), (357, 52980), (420, 45033), (476, 39735), (510, 37086), (595, 31788), (612, 30905), (630, 30022), (714, 26490), (765, 24724), (883, 21420), (1020, 18543), (1071, 17660), (1190, 15894), (1260, 15011), (1428, 13245), (1530, 12362), (1766, 10710), (1785, 10596), (2142, 8830), (2380, 7947), (2649, 7140), (3060, 6181), (3532, 5355), (3570, 5298), (4284, 4415)]