18780075

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 37140480

約数和(自身を除く): 18360405

約数列:

[1, 3, 5, 9, 15, 19, 23, 25, 45, 57, 69, 75, 95, 115, 171, 191, 207, 225, 285, 345, 437, 475, 573, 575, 855, 955, 1035, 1311, 1425, 1719, 1725, 2185, 2865, 3629, 3933, 4275, 4393, 4775, 5175, 6555, 8595, 10887, 10925, 13179, 14325, 18145, 19665, 21965, 32661, 32775, 39537, 42975, 54435, 65895, 83467, 90725, 98325, 109825, 163305, 197685, 250401, 272175, 329475, 417335, 751203, 816525, 988425, 1252005, 2086675, 3756015, 6260025, 18780075]

約数ペア:

[(1, 18780075), (3, 6260025), (5, 3756015), (9, 2086675), (15, 1252005), (19, 988425), (23, 816525), (25, 751203), (45, 417335), (57, 329475), (69, 272175), (75, 250401), (95, 197685), (115, 163305), (171, 109825), (191, 98325), (207, 90725), (225, 83467), (285, 65895), (345, 54435), (437, 42975), (475, 39537), (573, 32775), (575, 32661), (855, 21965), (955, 19665), (1035, 18145), (1311, 14325), (1425, 13179), (1719, 10925), (1725, 10887), (2185, 8595), (2865, 6555), (3629, 5175), (3933, 4775), (4275, 4393)]