20265438

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25353762

約数列:

[1, 2, 3, 6, 19, 23, 38, 46, 57, 59, 69, 114, 118, 131, 138, 177, 262, 354, 393, 437, 786, 874, 1121, 1311, 1357, 2242, 2489, 2622, 2714, 3013, 3363, 4071, 4978, 6026, 6726, 7467, 7729, 8142, 9039, 14934, 15458, 18078, 23187, 25783, 46374, 51566, 57247, 77349, 114494, 146851, 154698, 171741, 177767, 293702, 343482, 355534, 440553, 533301, 881106, 1066602, 3377573, 6755146, 10132719, 20265438]

約数ペア:

[(1, 20265438), (2, 10132719), (3, 6755146), (6, 3377573), (19, 1066602), (23, 881106), (38, 533301), (46, 440553), (57, 355534), (59, 343482), (69, 293702), (114, 177767), (118, 171741), (131, 154698), (138, 146851), (177, 114494), (262, 77349), (354, 57247), (393, 51566), (437, 46374), (786, 25783), (874, 23187), (1121, 18078), (1311, 15458), (1357, 14934), (2242, 9039), (2489, 8142), (2622, 7729), (2714, 7467), (3013, 6726), (3363, 6026), (4071, 4978)]