20826540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16529}}^1$

素因数の和:16551

約数の個数: 72

約数和(自身を含む): 72203040

約数和(自身を除く): 51376500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16529, 33058, 49587, 66116, 82645, 99174, 115703, 148761, 165290, 198348, 231406, 247935, 297522, 330580, 347109, 462812, 495870, 578515, 595044, 694218, 743805, 991740, 1041327, 1157030, 1388436, 1487610, 1735545, 2082654, 2314060, 2975220, 3471090, 4165308, 5206635, 6942180, 10413270, 20826540]

約数ペア:

[(1, 20826540), (2, 10413270), (3, 6942180), (4, 5206635), (5, 4165308), (6, 3471090), (7, 2975220), (9, 2314060), (10, 2082654), (12, 1735545), (14, 1487610), (15, 1388436), (18, 1157030), (20, 1041327), (21, 991740), (28, 743805), (30, 694218), (35, 595044), (36, 578515), (42, 495870), (45, 462812), (60, 347109), (63, 330580), (70, 297522), (84, 247935), (90, 231406), (105, 198348), (126, 165290), (140, 148761), (180, 115703), (210, 99174), (252, 82645), (315, 66116), (420, 49587), (630, 33058), (1260, 16529)]