21804172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{761}}^1$

素因数の和:826

約数の個数: 48

約数和(自身を含む): 44805600

約数和(自身を除く): 23001428

約数列:

[1, 2, 4, 13, 19, 26, 29, 38, 52, 58, 76, 116, 247, 377, 494, 551, 754, 761, 988, 1102, 1508, 1522, 2204, 3044, 7163, 9893, 14326, 14459, 19786, 22069, 28652, 28918, 39572, 44138, 57836, 88276, 187967, 286897, 375934, 419311, 573794, 751868, 838622, 1147588, 1677244, 5451043, 10902086, 21804172]

約数ペア:

[(1, 21804172), (2, 10902086), (4, 5451043), (13, 1677244), (19, 1147588), (26, 838622), (29, 751868), (38, 573794), (52, 419311), (58, 375934), (76, 286897), (116, 187967), (247, 88276), (377, 57836), (494, 44138), (551, 39572), (754, 28918), (761, 28652), (988, 22069), (1102, 19786), (1508, 14459), (1522, 14326), (2204, 9893), (3044, 7163)]