20897454

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 27002706

約数列:

[1, 2, 3, 6, 17, 19, 34, 38, 41, 51, 57, 82, 102, 114, 123, 246, 263, 323, 526, 646, 697, 779, 789, 969, 1394, 1558, 1578, 1938, 2091, 2337, 4182, 4471, 4674, 4997, 8942, 9994, 10783, 13243, 13413, 14991, 21566, 26486, 26826, 29982, 32349, 39729, 64698, 79458, 84949, 169898, 183311, 204877, 254847, 366622, 409754, 509694, 549933, 614631, 1099866, 1229262, 3482909, 6965818, 10448727, 20897454]

約数ペア:

[(1, 20897454), (2, 10448727), (3, 6965818), (6, 3482909), (17, 1229262), (19, 1099866), (34, 614631), (38, 549933), (41, 509694), (51, 409754), (57, 366622), (82, 254847), (102, 204877), (114, 183311), (123, 169898), (246, 84949), (263, 79458), (323, 64698), (526, 39729), (646, 32349), (697, 29982), (779, 26826), (789, 26486), (969, 21566), (1394, 14991), (1558, 13413), (1578, 13243), (1938, 10783), (2091, 9994), (2337, 8942), (4182, 4997), (4471, 4674)]