21594488

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 46202400

約数和(自身を除く): 24607912

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 61, 68, 76, 122, 136, 137, 152, 244, 274, 323, 488, 548, 646, 1037, 1096, 1159, 1292, 2074, 2318, 2329, 2584, 2603, 4148, 4636, 4658, 5206, 8296, 8357, 9272, 9316, 10412, 16714, 18632, 19703, 20824, 33428, 39406, 44251, 66856, 78812, 88502, 142069, 157624, 158783, 177004, 284138, 317566, 354008, 568276, 635132, 1136552, 1270264, 2699311, 5398622, 10797244, 21594488]

約数ペア:

[(1, 21594488), (2, 10797244), (4, 5398622), (8, 2699311), (17, 1270264), (19, 1136552), (34, 635132), (38, 568276), (61, 354008), (68, 317566), (76, 284138), (122, 177004), (136, 158783), (137, 157624), (152, 142069), (244, 88502), (274, 78812), (323, 66856), (488, 44251), (548, 39406), (646, 33428), (1037, 20824), (1096, 19703), (1159, 18632), (1292, 16714), (2074, 10412), (2318, 9316), (2329, 9272), (2584, 8357), (2603, 8296), (4148, 5206), (4636, 4658)]