20500816

素因数分解:

$2^4\times 7^2\times {\mathrm{79}}^1\times {\mathrm{331}}^1$

素因数の和:432

約数の個数: 60

約数和(自身を含む): 46931520

約数和(自身を除く): 26430704

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 79, 98, 112, 158, 196, 316, 331, 392, 553, 632, 662, 784, 1106, 1264, 1324, 2212, 2317, 2648, 3871, 4424, 4634, 5296, 7742, 8848, 9268, 15484, 16219, 18536, 26149, 30968, 32438, 37072, 52298, 61936, 64876, 104596, 129752, 183043, 209192, 259504, 366086, 418384, 732172, 1281301, 1464344, 2562602, 2928688, 5125204, 10250408, 20500816]

約数ペア:

[(1, 20500816), (2, 10250408), (4, 5125204), (7, 2928688), (8, 2562602), (14, 1464344), (16, 1281301), (28, 732172), (49, 418384), (56, 366086), (79, 259504), (98, 209192), (112, 183043), (158, 129752), (196, 104596), (316, 64876), (331, 61936), (392, 52298), (553, 37072), (632, 32438), (662, 30968), (784, 26149), (1106, 18536), (1264, 16219), (1324, 15484), (2212, 9268), (2317, 8848), (2648, 7742), (3871, 5296), (4424, 4634)]