21026212

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 40966128

約数和(自身を除く): 19939916

約数列:

[1, 2, 4, 17, 34, 37, 61, 68, 74, 122, 137, 148, 244, 274, 548, 629, 1037, 1258, 2074, 2257, 2329, 2516, 4148, 4514, 4658, 5069, 8357, 9028, 9316, 10138, 16714, 20276, 33428, 38369, 76738, 86173, 142069, 153476, 172346, 284138, 309209, 344692, 568276, 618418, 1236836, 5256553, 10513106, 21026212]

約数ペア:

[(1, 21026212), (2, 10513106), (4, 5256553), (17, 1236836), (34, 618418), (37, 568276), (61, 344692), (68, 309209), (74, 284138), (122, 172346), (137, 153476), (148, 142069), (244, 86173), (274, 76738), (548, 38369), (629, 33428), (1037, 20276), (1258, 16714), (2074, 10138), (2257, 9316), (2329, 9028), (2516, 8357), (4148, 5069), (4514, 4658)]