81805860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{7703}}^1$

素因数の和:7777

約数の個数: 72

約数和(自身を含む): 252383040

約数和(自身を除く): 170577180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 2124, 2655, 3540, 5310, 7703, 10620, 15406, 23109, 30812, 38515, 46218, 69327, 77030, 92436, 115545, 138654, 154060, 231090, 277308, 346635, 454477, 462180, 693270, 908954, 1363431, 1386540, 1817908, 2272385, 2726862, 4090293, 4544770, 5453724, 6817155, 8180586, 9089540, 13634310, 16361172, 20451465, 27268620, 40902930, 81805860]

約数ペア:

[(1, 81805860), (2, 40902930), (3, 27268620), (4, 20451465), (5, 16361172), (6, 13634310), (9, 9089540), (10, 8180586), (12, 6817155), (15, 5453724), (18, 4544770), (20, 4090293), (30, 2726862), (36, 2272385), (45, 1817908), (59, 1386540), (60, 1363431), (90, 908954), (118, 693270), (177, 462180), (180, 454477), (236, 346635), (295, 277308), (354, 231090), (531, 154060), (590, 138654), (708, 115545), (885, 92436), (1062, 77030), (1180, 69327), (1770, 46218), (2124, 38515), (2655, 30812), (3540, 23109), (5310, 15406), (7703, 10620)]