21196280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:169

約数の個数: 128

約数和(自身を含む): 59460480

約数和(自身を除く): 38264200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 61, 68, 70, 73, 85, 119, 122, 136, 140, 146, 170, 238, 244, 280, 292, 305, 340, 365, 427, 476, 488, 511, 584, 595, 610, 680, 730, 854, 952, 1022, 1037, 1190, 1220, 1241, 1460, 1708, 2044, 2074, 2135, 2380, 2440, 2482, 2555, 2920, 3416, 4088, 4148, 4270, 4453, 4760, 4964, 5110, 5185, 6205, 7259, 8296, 8540, 8687, 8906, 9928, 10220, 10370, 12410, 14518, 17080, 17374, 17812, 20440, 20740, 22265, 24820, 29036, 31171, 34748, 35624, 36295, 41480, 43435, 44530, 49640, 58072, 62342, 69496, 72590, 75701, 86870, 89060, 124684, 145180, 151402, 155855, 173740, 178120, 249368, 290360, 302804, 311710, 347480, 378505, 529907, 605608, 623420, 757010, 1059814, 1246840, 1514020, 2119628, 2649535, 3028040, 4239256, 5299070, 10598140, 21196280]

約数ペア:

[(1, 21196280), (2, 10598140), (4, 5299070), (5, 4239256), (7, 3028040), (8, 2649535), (10, 2119628), (14, 1514020), (17, 1246840), (20, 1059814), (28, 757010), (34, 623420), (35, 605608), (40, 529907), (56, 378505), (61, 347480), (68, 311710), (70, 302804), (73, 290360), (85, 249368), (119, 178120), (122, 173740), (136, 155855), (140, 151402), (146, 145180), (170, 124684), (238, 89060), (244, 86870), (280, 75701), (292, 72590), (305, 69496), (340, 62342), (365, 58072), (427, 49640), (476, 44530), (488, 43435), (511, 41480), (584, 36295), (595, 35624), (610, 34748), (680, 31171), (730, 29036), (854, 24820), (952, 22265), (1022, 20740), (1037, 20440), (1190, 17812), (1220, 17374), (1241, 17080), (1460, 14518), (1708, 12410), (2044, 10370), (2074, 10220), (2135, 9928), (2380, 8906), (2440, 8687), (2482, 8540), (2555, 8296), (2920, 7259), (3416, 6205), (4088, 5185), (4148, 5110), (4270, 4964), (4453, 4760)]