21374900

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 48981240

約数和(自身を除く): 27606340

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 53, 74, 100, 106, 109, 148, 185, 212, 218, 265, 370, 436, 530, 545, 740, 925, 1060, 1090, 1325, 1850, 1961, 2180, 2650, 2725, 3700, 3922, 4033, 5300, 5450, 5777, 7844, 8066, 9805, 10900, 11554, 16132, 19610, 20165, 23108, 28885, 39220, 40330, 49025, 57770, 80660, 98050, 100825, 115540, 144425, 196100, 201650, 213749, 288850, 403300, 427498, 577700, 854996, 1068745, 2137490, 4274980, 5343725, 10687450, 21374900]

約数ペア:

[(1, 21374900), (2, 10687450), (4, 5343725), (5, 4274980), (10, 2137490), (20, 1068745), (25, 854996), (37, 577700), (50, 427498), (53, 403300), (74, 288850), (100, 213749), (106, 201650), (109, 196100), (148, 144425), (185, 115540), (212, 100825), (218, 98050), (265, 80660), (370, 57770), (436, 49025), (530, 40330), (545, 39220), (740, 28885), (925, 23108), (1060, 20165), (1090, 19610), (1325, 16132), (1850, 11554), (1961, 10900), (2180, 9805), (2650, 8066), (2725, 7844), (3700, 5777), (3922, 5450), (4033, 5300)]