20254684

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 40309920

約数和(自身を除く): 20055236

約数列:

[1, 2, 4, 17, 19, 34, 38, 61, 68, 76, 122, 244, 257, 323, 514, 646, 1028, 1037, 1159, 1292, 2074, 2318, 4148, 4369, 4636, 4883, 8738, 9766, 15677, 17476, 19532, 19703, 31354, 39406, 62708, 78812, 83011, 166022, 266509, 297863, 332044, 533018, 595726, 1066036, 1191452, 5063671, 10127342, 20254684]

約数ペア:

[(1, 20254684), (2, 10127342), (4, 5063671), (17, 1191452), (19, 1066036), (34, 595726), (38, 533018), (61, 332044), (68, 297863), (76, 266509), (122, 166022), (244, 83011), (257, 78812), (323, 62708), (514, 39406), (646, 31354), (1028, 19703), (1037, 19532), (1159, 17476), (1292, 15677), (2074, 9766), (2318, 8738), (4148, 4883), (4369, 4636)]