21018732

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1$

素因数の和:431

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 39945108

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 41, 42, 51, 68, 82, 84, 102, 119, 123, 164, 204, 238, 246, 287, 357, 359, 476, 492, 574, 697, 714, 718, 861, 1077, 1148, 1394, 1428, 1436, 1722, 2091, 2154, 2513, 2788, 3444, 4182, 4308, 4879, 5026, 6103, 7539, 8364, 9758, 10052, 12206, 14637, 14719, 15078, 18309, 19516, 24412, 29274, 29438, 30156, 36618, 42721, 44157, 58548, 58876, 73236, 85442, 88314, 103033, 128163, 170884, 176628, 206066, 250223, 256326, 309099, 412132, 500446, 512652, 618198, 750669, 1000892, 1236396, 1501338, 1751561, 3002676, 3503122, 5254683, 7006244, 10509366, 21018732]

約数ペア:

[(1, 21018732), (2, 10509366), (3, 7006244), (4, 5254683), (6, 3503122), (7, 3002676), (12, 1751561), (14, 1501338), (17, 1236396), (21, 1000892), (28, 750669), (34, 618198), (41, 512652), (42, 500446), (51, 412132), (68, 309099), (82, 256326), (84, 250223), (102, 206066), (119, 176628), (123, 170884), (164, 128163), (204, 103033), (238, 88314), (246, 85442), (287, 73236), (357, 58876), (359, 58548), (476, 44157), (492, 42721), (574, 36618), (697, 30156), (714, 29438), (718, 29274), (861, 24412), (1077, 19516), (1148, 18309), (1394, 15078), (1428, 14719), (1436, 14637), (1722, 12206), (2091, 10052), (2154, 9758), (2513, 8364), (2788, 7539), (3444, 6103), (4182, 5026), (4308, 4879)]