21428568

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 192

約数和(自身を含む): 73120320

約数和(自身を除く): 51691752

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 17, 18, 21, 24, 28, 34, 36, 41, 42, 51, 56, 61, 63, 68, 72, 82, 84, 102, 119, 122, 123, 126, 136, 153, 164, 168, 183, 204, 238, 244, 246, 252, 287, 306, 328, 357, 366, 369, 408, 427, 476, 488, 492, 504, 549, 574, 612, 697, 714, 732, 738, 854, 861, 952, 984, 1037, 1071, 1098, 1148, 1224, 1281, 1394, 1428, 1464, 1476, 1708, 1722, 2074, 2091, 2142, 2196, 2296, 2501, 2562, 2583, 2788, 2856, 2952, 3111, 3416, 3444, 3843, 4148, 4182, 4284, 4392, 4879, 5002, 5124, 5166, 5576, 6222, 6273, 6888, 7259, 7503, 7686, 8296, 8364, 8568, 9333, 9758, 10004, 10248, 10332, 12444, 12546, 14518, 14637, 15006, 15372, 16728, 17507, 18666, 19516, 20008, 20664, 21777, 22509, 24888, 25092, 29036, 29274, 30012, 30744, 35014, 37332, 39032, 42517, 43554, 43911, 45018, 50184, 52521, 58072, 58548, 60024, 65331, 70028, 74664, 85034, 87108, 87822, 90036, 105042, 117096, 127551, 130662, 140056, 157563, 170068, 174216, 175644, 180072, 210084, 255102, 261324, 297619, 315126, 340136, 351288, 382653, 420168, 510204, 522648, 595238, 630252, 765306, 892857, 1020408, 1190476, 1260504, 1530612, 1785714, 2380952, 2678571, 3061224, 3571428, 5357142, 7142856, 10714284, 21428568]

約数ペア:

[(1, 21428568), (2, 10714284), (3, 7142856), (4, 5357142), (6, 3571428), (7, 3061224), (8, 2678571), (9, 2380952), (12, 1785714), (14, 1530612), (17, 1260504), (18, 1190476), (21, 1020408), (24, 892857), (28, 765306), (34, 630252), (36, 595238), (41, 522648), (42, 510204), (51, 420168), (56, 382653), (61, 351288), (63, 340136), (68, 315126), (72, 297619), (82, 261324), (84, 255102), (102, 210084), (119, 180072), (122, 175644), (123, 174216), (126, 170068), (136, 157563), (153, 140056), (164, 130662), (168, 127551), (183, 117096), (204, 105042), (238, 90036), (244, 87822), (246, 87108), (252, 85034), (287, 74664), (306, 70028), (328, 65331), (357, 60024), (366, 58548), (369, 58072), (408, 52521), (427, 50184), (476, 45018), (488, 43911), (492, 43554), (504, 42517), (549, 39032), (574, 37332), (612, 35014), (697, 30744), (714, 30012), (732, 29274), (738, 29036), (854, 25092), (861, 24888), (952, 22509), (984, 21777), (1037, 20664), (1071, 20008), (1098, 19516), (1148, 18666), (1224, 17507), (1281, 16728), (1394, 15372), (1428, 15006), (1464, 14637), (1476, 14518), (1708, 12546), (1722, 12444), (2074, 10332), (2091, 10248), (2142, 10004), (2196, 9758), (2296, 9333), (2501, 8568), (2562, 8364), (2583, 8296), (2788, 7686), (2856, 7503), (2952, 7259), (3111, 6888), (3416, 6273), (3444, 6222), (3843, 5576), (4148, 5166), (4182, 5124), (4284, 5002), (4392, 4879)]