21370904

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 45308160

約数和(自身を除く): 23937256

約数列:

[1, 2, 4, 8, 17, 31, 34, 37, 62, 68, 74, 124, 136, 137, 148, 248, 274, 296, 527, 548, 629, 1054, 1096, 1147, 1258, 2108, 2294, 2329, 2516, 4216, 4247, 4588, 4658, 5032, 5069, 8494, 9176, 9316, 10138, 16988, 18632, 19499, 20276, 33976, 38998, 40552, 72199, 77996, 86173, 144398, 155992, 157139, 172346, 288796, 314278, 344692, 577592, 628556, 689384, 1257112, 2671363, 5342726, 10685452, 21370904]

約数ペア:

[(1, 21370904), (2, 10685452), (4, 5342726), (8, 2671363), (17, 1257112), (31, 689384), (34, 628556), (37, 577592), (62, 344692), (68, 314278), (74, 288796), (124, 172346), (136, 157139), (137, 155992), (148, 144398), (248, 86173), (274, 77996), (296, 72199), (527, 40552), (548, 38998), (629, 33976), (1054, 20276), (1096, 19499), (1147, 18632), (1258, 16988), (2108, 10138), (2294, 9316), (2329, 9176), (2516, 8494), (4216, 5069), (4247, 5032), (4588, 4658)]