21776745

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 18036375

約数列:

[1, 3, 5, 15, 17, 23, 47, 51, 69, 79, 85, 115, 141, 235, 237, 255, 345, 391, 395, 705, 799, 1081, 1173, 1185, 1343, 1817, 1955, 2397, 3243, 3713, 3995, 4029, 5405, 5451, 5865, 6715, 9085, 11139, 11985, 16215, 18377, 18565, 20145, 27255, 30889, 55131, 55695, 63121, 85399, 91885, 92667, 154445, 189363, 256197, 275655, 315605, 426995, 463335, 946815, 1280985, 1451783, 4355349, 7258915, 21776745]

約数ペア:

[(1, 21776745), (3, 7258915), (5, 4355349), (15, 1451783), (17, 1280985), (23, 946815), (47, 463335), (51, 426995), (69, 315605), (79, 275655), (85, 256197), (115, 189363), (141, 154445), (235, 92667), (237, 91885), (255, 85399), (345, 63121), (391, 55695), (395, 55131), (705, 30889), (799, 27255), (1081, 20145), (1173, 18565), (1185, 18377), (1343, 16215), (1817, 11985), (1955, 11139), (2397, 9085), (3243, 6715), (3713, 5865), (3995, 5451), (4029, 5405)]