81908100

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{91009}}^1$

素因数の和:91029

約数の個数: 54

約数和(自身を含む): 256739210

約数和(自身を除く): 174831110

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 91009, 182018, 273027, 364036, 455045, 546054, 819081, 910090, 1092108, 1365135, 1638162, 1820180, 2275225, 2730270, 3276324, 4095405, 4550450, 5460540, 6825675, 8190810, 9100900, 13651350, 16381620, 20477025, 27302700, 40954050, 81908100]

約数ペア:

[(1, 81908100), (2, 40954050), (3, 27302700), (4, 20477025), (5, 16381620), (6, 13651350), (9, 9100900), (10, 8190810), (12, 6825675), (15, 5460540), (18, 4550450), (20, 4095405), (25, 3276324), (30, 2730270), (36, 2275225), (45, 1820180), (50, 1638162), (60, 1365135), (75, 1092108), (90, 910090), (100, 819081), (150, 546054), (180, 455045), (225, 364036), (300, 273027), (450, 182018), (900, 91009)]