21874860

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{643}}^1$

素因数の和:674

約数の個数: 144

約数和(自身を含む): 78763776

約数和(自身を除く): 56888916

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 243, 252, 270, 315, 324, 378, 405, 420, 486, 540, 567, 630, 643, 756, 810, 945, 972, 1134, 1215, 1260, 1286, 1620, 1701, 1890, 1929, 2268, 2430, 2572, 2835, 3215, 3402, 3780, 3858, 4501, 4860, 5670, 5787, 6430, 6804, 7716, 8505, 9002, 9645, 11340, 11574, 12860, 13503, 17010, 17361, 18004, 19290, 22505, 23148, 27006, 28935, 34020, 34722, 38580, 40509, 45010, 52083, 54012, 57870, 67515, 69444, 81018, 86805, 90020, 104166, 115740, 121527, 135030, 156249, 162036, 173610, 202545, 208332, 243054, 260415, 270060, 312498, 347220, 364581, 405090, 486108, 520830, 607635, 624996, 729162, 781245, 810180, 1041660, 1093743, 1215270, 1458324, 1562490, 1822905, 2187486, 2430540, 3124980, 3645810, 4374972, 5468715, 7291620, 10937430, 21874860]

約数ペア:

[(1, 21874860), (2, 10937430), (3, 7291620), (4, 5468715), (5, 4374972), (6, 3645810), (7, 3124980), (9, 2430540), (10, 2187486), (12, 1822905), (14, 1562490), (15, 1458324), (18, 1215270), (20, 1093743), (21, 1041660), (27, 810180), (28, 781245), (30, 729162), (35, 624996), (36, 607635), (42, 520830), (45, 486108), (54, 405090), (60, 364581), (63, 347220), (70, 312498), (81, 270060), (84, 260415), (90, 243054), (105, 208332), (108, 202545), (126, 173610), (135, 162036), (140, 156249), (162, 135030), (180, 121527), (189, 115740), (210, 104166), (243, 90020), (252, 86805), (270, 81018), (315, 69444), (324, 67515), (378, 57870), (405, 54012), (420, 52083), (486, 45010), (540, 40509), (567, 38580), (630, 34722), (643, 34020), (756, 28935), (810, 27006), (945, 23148), (972, 22505), (1134, 19290), (1215, 18004), (1260, 17361), (1286, 17010), (1620, 13503), (1701, 12860), (1890, 11574), (1929, 11340), (2268, 9645), (2430, 9002), (2572, 8505), (2835, 7716), (3215, 6804), (3402, 6430), (3780, 5787), (3858, 5670), (4501, 4860)]