19968420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:229

約数の個数: 96

約数和(自身を含む): 58480128

約数和(自身を除く): 38511708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 73, 94, 97, 141, 146, 188, 194, 219, 235, 282, 291, 292, 365, 388, 438, 470, 485, 564, 582, 705, 730, 876, 940, 970, 1095, 1164, 1410, 1455, 1460, 1940, 2190, 2820, 2910, 3431, 4380, 4559, 5820, 6862, 7081, 9118, 10293, 13677, 13724, 14162, 17155, 18236, 20586, 21243, 22795, 27354, 28324, 34310, 35405, 41172, 42486, 45590, 51465, 54708, 68385, 68620, 70810, 84972, 91180, 102930, 106215, 136770, 141620, 205860, 212430, 273540, 332807, 424860, 665614, 998421, 1331228, 1664035, 1996842, 3328070, 3993684, 4992105, 6656140, 9984210, 19968420]

約数ペア:

[(1, 19968420), (2, 9984210), (3, 6656140), (4, 4992105), (5, 3993684), (6, 3328070), (10, 1996842), (12, 1664035), (15, 1331228), (20, 998421), (30, 665614), (47, 424860), (60, 332807), (73, 273540), (94, 212430), (97, 205860), (141, 141620), (146, 136770), (188, 106215), (194, 102930), (219, 91180), (235, 84972), (282, 70810), (291, 68620), (292, 68385), (365, 54708), (388, 51465), (438, 45590), (470, 42486), (485, 41172), (564, 35405), (582, 34310), (705, 28324), (730, 27354), (876, 22795), (940, 21243), (970, 20586), (1095, 18236), (1164, 17155), (1410, 14162), (1455, 13724), (1460, 13677), (1940, 10293), (2190, 9118), (2820, 7081), (2910, 6862), (3431, 5820), (4380, 4559)]