398790

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{211}}^1$

素因数の和:234

約数の個数: 64

約数和(自身を含む): 1221120

約数和(自身を除く): 822330

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 211, 270, 315, 378, 422, 630, 633, 945, 1055, 1266, 1477, 1890, 1899, 2110, 2954, 3165, 3798, 4431, 5697, 6330, 7385, 8862, 9495, 11394, 13293, 14770, 18990, 22155, 26586, 28485, 39879, 44310, 56970, 66465, 79758, 132930, 199395, 398790]

約数ペア:

[(1, 398790), (2, 199395), (3, 132930), (5, 79758), (6, 66465), (7, 56970), (9, 44310), (10, 39879), (14, 28485), (15, 26586), (18, 22155), (21, 18990), (27, 14770), (30, 13293), (35, 11394), (42, 9495), (45, 8862), (54, 7385), (63, 6330), (70, 5697), (90, 4431), (105, 3798), (126, 3165), (135, 2954), (189, 2110), (210, 1899), (211, 1890), (270, 1477), (315, 1266), (378, 1055), (422, 945), (630, 633)]