21290184

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:307

約数の個数: 96

約数和(自身を含む): 61776000

約数和(自身を除く): 40485816

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 57, 72, 76, 79, 114, 152, 158, 171, 197, 228, 237, 316, 342, 394, 456, 474, 591, 632, 684, 711, 788, 948, 1182, 1368, 1422, 1501, 1576, 1773, 1896, 2364, 2844, 3002, 3546, 3743, 4503, 4728, 5688, 6004, 7092, 7486, 9006, 11229, 12008, 13509, 14184, 14972, 15563, 18012, 22458, 27018, 29944, 31126, 33687, 36024, 44916, 46689, 54036, 62252, 67374, 89832, 93378, 108072, 124504, 134748, 140067, 186756, 269496, 280134, 295697, 373512, 560268, 591394, 887091, 1120536, 1182788, 1774182, 2365576, 2661273, 3548364, 5322546, 7096728, 10645092, 21290184]

約数ペア:

[(1, 21290184), (2, 10645092), (3, 7096728), (4, 5322546), (6, 3548364), (8, 2661273), (9, 2365576), (12, 1774182), (18, 1182788), (19, 1120536), (24, 887091), (36, 591394), (38, 560268), (57, 373512), (72, 295697), (76, 280134), (79, 269496), (114, 186756), (152, 140067), (158, 134748), (171, 124504), (197, 108072), (228, 93378), (237, 89832), (316, 67374), (342, 62252), (394, 54036), (456, 46689), (474, 44916), (591, 36024), (632, 33687), (684, 31126), (711, 29944), (788, 27018), (948, 22458), (1182, 18012), (1368, 15563), (1422, 14972), (1501, 14184), (1576, 13509), (1773, 12008), (1896, 11229), (2364, 9006), (2844, 7486), (3002, 7092), (3546, 6004), (3743, 5688), (4503, 4728)]