81991620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2633}}^1$

素因数の和:2821

約数の個数: 72

約数和(自身を含む): 250240536

約数和(自身を除く): 168248916

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 173, 180, 346, 519, 692, 865, 1038, 1557, 1730, 2076, 2595, 2633, 3114, 3460, 5190, 5266, 6228, 7785, 7899, 10380, 10532, 13165, 15570, 15798, 23697, 26330, 31140, 31596, 39495, 47394, 52660, 78990, 94788, 118485, 157980, 236970, 455509, 473940, 911018, 1366527, 1822036, 2277545, 2733054, 4099581, 4555090, 5466108, 6832635, 8199162, 9110180, 13665270, 16398324, 20497905, 27330540, 40995810, 81991620]

約数ペア:

[(1, 81991620), (2, 40995810), (3, 27330540), (4, 20497905), (5, 16398324), (6, 13665270), (9, 9110180), (10, 8199162), (12, 6832635), (15, 5466108), (18, 4555090), (20, 4099581), (30, 2733054), (36, 2277545), (45, 1822036), (60, 1366527), (90, 911018), (173, 473940), (180, 455509), (346, 236970), (519, 157980), (692, 118485), (865, 94788), (1038, 78990), (1557, 52660), (1730, 47394), (2076, 39495), (2595, 31596), (2633, 31140), (3114, 26330), (3460, 23697), (5190, 15798), (5266, 15570), (6228, 13165), (7785, 10532), (7899, 10380)]