19893315

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{353}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 36515808

約数和(自身を除く): 16622493

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 289, 353, 663, 867, 1059, 1105, 1445, 1765, 3315, 3757, 4335, 4589, 5295, 6001, 11271, 13767, 18003, 18785, 22945, 30005, 56355, 68835, 78013, 90015, 102017, 234039, 306051, 390065, 510085, 1170195, 1326221, 1530255, 3978663, 6631105, 19893315]

約数ペア:

[(1, 19893315), (3, 6631105), (5, 3978663), (13, 1530255), (15, 1326221), (17, 1170195), (39, 510085), (51, 390065), (65, 306051), (85, 234039), (195, 102017), (221, 90015), (255, 78013), (289, 68835), (353, 56355), (663, 30005), (867, 22945), (1059, 18785), (1105, 18003), (1445, 13767), (1765, 11271), (3315, 6001), (3757, 5295), (4335, 4589)]