21076419

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 36197280

約数和(自身を除く): 15120861

約数列:

[1, 3, 7, 13, 21, 39, 41, 49, 91, 123, 147, 269, 273, 287, 533, 637, 807, 861, 1599, 1883, 1911, 2009, 3497, 3731, 5649, 6027, 10491, 11029, 11193, 13181, 24479, 26117, 33087, 39543, 73437, 77203, 78351, 143377, 171353, 231609, 430131, 514059, 540421, 1003639, 1621263, 3010917, 7025473, 21076419]

約数ペア:

[(1, 21076419), (3, 7025473), (7, 3010917), (13, 1621263), (21, 1003639), (39, 540421), (41, 514059), (49, 430131), (91, 231609), (123, 171353), (147, 143377), (269, 78351), (273, 77203), (287, 73437), (533, 39543), (637, 33087), (807, 26117), (861, 24479), (1599, 13181), (1883, 11193), (1911, 11029), (2009, 10491), (3497, 6027), (3731, 5649)]