209895470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1117}}^1$

素因数の和:1209

約数の個数: 64

約数和(自身を含む): 425018880

約数和(自身を除く): 215123410

約数列:

[1, 2, 5, 10, 19, 23, 38, 43, 46, 86, 95, 115, 190, 215, 230, 430, 437, 817, 874, 989, 1117, 1634, 1978, 2185, 2234, 4085, 4370, 4945, 5585, 8170, 9890, 11170, 18791, 21223, 25691, 37582, 42446, 48031, 51382, 93955, 96062, 106115, 128455, 187910, 212230, 240155, 256910, 480310, 488129, 912589, 976258, 1104713, 1825178, 2209426, 2440645, 4562945, 4881290, 5523565, 9125890, 11047130, 20989547, 41979094, 104947735, 209895470]

約数ペア:

[(1, 209895470), (2, 104947735), (5, 41979094), (10, 20989547), (19, 11047130), (23, 9125890), (38, 5523565), (43, 4881290), (46, 4562945), (86, 2440645), (95, 2209426), (115, 1825178), (190, 1104713), (215, 976258), (230, 912589), (430, 488129), (437, 480310), (817, 256910), (874, 240155), (989, 212230), (1117, 187910), (1634, 128455), (1978, 106115), (2185, 96062), (2234, 93955), (4085, 51382), (4370, 48031), (4945, 42446), (5585, 37582), (8170, 25691), (9890, 21223), (11170, 18791)]