21051240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1319}}^1$

素因数の和:1359

約数の個数: 128

約数和(自身を含む): 76032000

約数和(自身を除く): 54980760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1319, 1330, 1596, 1995, 2280, 2638, 2660, 3192, 3957, 3990, 5276, 5320, 6595, 7914, 7980, 9233, 10552, 13190, 15828, 15960, 18466, 19785, 25061, 26380, 27699, 31656, 36932, 39570, 46165, 50122, 52760, 55398, 73864, 75183, 79140, 92330, 100244, 110796, 125305, 138495, 150366, 158280, 175427, 184660, 200488, 221592, 250610, 276990, 300732, 350854, 369320, 375915, 501220, 526281, 553980, 601464, 701708, 751830, 877135, 1002440, 1052562, 1107960, 1403416, 1503660, 1754270, 2105124, 2631405, 3007320, 3508540, 4210248, 5262810, 7017080, 10525620, 21051240]

約数ペア:

[(1, 21051240), (2, 10525620), (3, 7017080), (4, 5262810), (5, 4210248), (6, 3508540), (7, 3007320), (8, 2631405), (10, 2105124), (12, 1754270), (14, 1503660), (15, 1403416), (19, 1107960), (20, 1052562), (21, 1002440), (24, 877135), (28, 751830), (30, 701708), (35, 601464), (38, 553980), (40, 526281), (42, 501220), (56, 375915), (57, 369320), (60, 350854), (70, 300732), (76, 276990), (84, 250610), (95, 221592), (105, 200488), (114, 184660), (120, 175427), (133, 158280), (140, 150366), (152, 138495), (168, 125305), (190, 110796), (210, 100244), (228, 92330), (266, 79140), (280, 75183), (285, 73864), (380, 55398), (399, 52760), (420, 50122), (456, 46165), (532, 39570), (570, 36932), (665, 31656), (760, 27699), (798, 26380), (840, 25061), (1064, 19785), (1140, 18466), (1319, 15960), (1330, 15828), (1596, 13190), (1995, 10552), (2280, 9233), (2638, 7980), (2660, 7914), (3192, 6595), (3957, 5320), (3990, 5276)]