20740976

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:417

約数の個数: 40

約数和(自身を含む): 41515200

約数和(自身を除く): 20774224

約数列:

[1, 2, 4, 8, 16, 61, 79, 122, 158, 244, 269, 316, 488, 538, 632, 976, 1076, 1264, 2152, 4304, 4819, 9638, 16409, 19276, 21251, 32818, 38552, 42502, 65636, 77104, 85004, 131272, 170008, 262544, 340016, 1296311, 2592622, 5185244, 10370488, 20740976]

約数ペア:

[(1, 20740976), (2, 10370488), (4, 5185244), (8, 2592622), (16, 1296311), (61, 340016), (79, 262544), (122, 170008), (158, 131272), (244, 85004), (269, 77104), (316, 65636), (488, 42502), (538, 38552), (632, 32818), (976, 21251), (1076, 19276), (1264, 16409), (2152, 9638), (4304, 4819)]