21976084

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 46116000

約数和(自身を除く): 24139916

約数列:

[1, 2, 4, 13, 19, 26, 29, 38, 52, 58, 59, 76, 116, 118, 169, 236, 247, 338, 377, 494, 551, 676, 754, 767, 988, 1102, 1121, 1508, 1534, 1711, 2204, 2242, 3068, 3211, 3422, 4484, 4901, 6422, 6844, 7163, 9802, 9971, 12844, 14326, 14573, 19604, 19942, 22243, 28652, 29146, 32509, 39884, 44486, 58292, 65018, 88972, 93119, 130036, 186238, 189449, 289159, 372476, 378898, 422617, 578318, 757796, 845234, 1156636, 1690468, 5494021, 10988042, 21976084]

約数ペア:

[(1, 21976084), (2, 10988042), (4, 5494021), (13, 1690468), (19, 1156636), (26, 845234), (29, 757796), (38, 578318), (52, 422617), (58, 378898), (59, 372476), (76, 289159), (116, 189449), (118, 186238), (169, 130036), (236, 93119), (247, 88972), (338, 65018), (377, 58292), (494, 44486), (551, 39884), (676, 32509), (754, 29146), (767, 28652), (988, 22243), (1102, 19942), (1121, 19604), (1508, 14573), (1534, 14326), (1711, 12844), (2204, 9971), (2242, 9802), (3068, 7163), (3211, 6844), (3422, 6422), (4484, 4901)]