81225900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{12893}}^1$

素因数の和:12920

約数の個数: 108

約数和(自身を含む): 290991792

約数和(自身を除く): 209765892

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 126, 140, 150, 175, 180, 210, 225, 252, 300, 315, 350, 420, 450, 525, 630, 700, 900, 1050, 1260, 1575, 2100, 3150, 6300, 12893, 25786, 38679, 51572, 64465, 77358, 90251, 116037, 128930, 154716, 180502, 193395, 232074, 257860, 270753, 322325, 361004, 386790, 451255, 464148, 541506, 580185, 644650, 773580, 812259, 902510, 966975, 1083012, 1160370, 1289300, 1353765, 1624518, 1805020, 1933950, 2256275, 2320740, 2707530, 2900925, 3249036, 3867900, 4061295, 4512550, 5415060, 5801850, 6768825, 8122590, 9025100, 11603700, 13537650, 16245180, 20306475, 27075300, 40612950, 81225900]

約数ペア:

[(1, 81225900), (2, 40612950), (3, 27075300), (4, 20306475), (5, 16245180), (6, 13537650), (7, 11603700), (9, 9025100), (10, 8122590), (12, 6768825), (14, 5801850), (15, 5415060), (18, 4512550), (20, 4061295), (21, 3867900), (25, 3249036), (28, 2900925), (30, 2707530), (35, 2320740), (36, 2256275), (42, 1933950), (45, 1805020), (50, 1624518), (60, 1353765), (63, 1289300), (70, 1160370), (75, 1083012), (84, 966975), (90, 902510), (100, 812259), (105, 773580), (126, 644650), (140, 580185), (150, 541506), (175, 464148), (180, 451255), (210, 386790), (225, 361004), (252, 322325), (300, 270753), (315, 257860), (350, 232074), (420, 193395), (450, 180502), (525, 154716), (630, 128930), (700, 116037), (900, 90251), (1050, 77358), (1260, 64465), (1575, 51572), (2100, 38679), (3150, 25786), (6300, 12893)]