21017535

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{587}}^1$

素因数の和:644

約数の個数: 64

約数和(自身を含む): 43352064

約数和(自身を除く): 22334529

約数列:

[1, 3, 5, 7, 11, 15, 21, 31, 33, 35, 55, 77, 93, 105, 155, 165, 217, 231, 341, 385, 465, 587, 651, 1023, 1085, 1155, 1705, 1761, 2387, 2935, 3255, 4109, 5115, 6457, 7161, 8805, 11935, 12327, 18197, 19371, 20545, 32285, 35805, 45199, 54591, 61635, 90985, 96855, 127379, 135597, 200167, 225995, 272955, 382137, 600501, 636895, 677985, 1000835, 1401169, 1910685, 3002505, 4203507, 7005845, 21017535]

約数ペア:

[(1, 21017535), (3, 7005845), (5, 4203507), (7, 3002505), (11, 1910685), (15, 1401169), (21, 1000835), (31, 677985), (33, 636895), (35, 600501), (55, 382137), (77, 272955), (93, 225995), (105, 200167), (155, 135597), (165, 127379), (217, 96855), (231, 90985), (341, 61635), (385, 54591), (465, 45199), (587, 35805), (651, 32285), (1023, 20545), (1085, 19371), (1155, 18197), (1705, 12327), (1761, 11935), (2387, 8805), (2935, 7161), (3255, 6457), (4109, 5115)]