21286890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13913}}^1$

素因数の和:13943

約数の個数: 48

約数和(自身を含む): 58605768

約数和(自身を除く): 37318878

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 85, 90, 102, 153, 170, 255, 306, 510, 765, 1530, 13913, 27826, 41739, 69565, 83478, 125217, 139130, 208695, 236521, 250434, 417390, 473042, 626085, 709563, 1182605, 1252170, 1419126, 2128689, 2365210, 3547815, 4257378, 7095630, 10643445, 21286890]

約数ペア:

[(1, 21286890), (2, 10643445), (3, 7095630), (5, 4257378), (6, 3547815), (9, 2365210), (10, 2128689), (15, 1419126), (17, 1252170), (18, 1182605), (30, 709563), (34, 626085), (45, 473042), (51, 417390), (85, 250434), (90, 236521), (102, 208695), (153, 139130), (170, 125217), (255, 83478), (306, 69565), (510, 41739), (765, 27826), (1530, 13913)]