18391835

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:144

約数の個数: 64

約数和(自身を含む): 30081024

約数和(自身を除く): 11689189

約数列:

[1, 5, 7, 11, 23, 31, 35, 55, 67, 77, 115, 155, 161, 217, 253, 335, 341, 385, 469, 713, 737, 805, 1085, 1265, 1541, 1705, 1771, 2077, 2345, 2387, 3565, 3685, 4991, 5159, 7705, 7843, 8855, 10385, 10787, 11935, 14539, 16951, 22847, 24955, 25795, 39215, 47771, 53935, 54901, 72695, 84755, 114235, 118657, 159929, 238855, 274505, 334397, 525481, 593285, 799645, 1671985, 2627405, 3678367, 18391835]

約数ペア:

[(1, 18391835), (5, 3678367), (7, 2627405), (11, 1671985), (23, 799645), (31, 593285), (35, 525481), (55, 334397), (67, 274505), (77, 238855), (115, 159929), (155, 118657), (161, 114235), (217, 84755), (253, 72695), (335, 54901), (341, 53935), (385, 47771), (469, 39215), (713, 25795), (737, 24955), (805, 22847), (1085, 16951), (1265, 14539), (1541, 11935), (1705, 10787), (1771, 10385), (2077, 8855), (2345, 7843), (2387, 7705), (3565, 5159), (3685, 4991)]