398604416

素因数分解:

$2^7\times 7^4\times {\mathrm{1297}}^1$

素因数の和:1339

約数の個数: 80

約数和(自身を含む): 927102990

約数和(自身を除く): 528498574

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 343, 392, 448, 686, 784, 896, 1297, 1372, 1568, 2401, 2594, 2744, 3136, 4802, 5188, 5488, 6272, 9079, 9604, 10376, 10976, 18158, 19208, 20752, 21952, 36316, 38416, 41504, 43904, 63553, 72632, 76832, 83008, 127106, 145264, 153664, 166016, 254212, 290528, 307328, 444871, 508424, 581056, 889742, 1016848, 1162112, 1779484, 2033696, 3114097, 3558968, 4067392, 6228194, 7117936, 8134784, 12456388, 14235872, 24912776, 28471744, 49825552, 56943488, 99651104, 199302208, 398604416]

約数ペア:

[(1, 398604416), (2, 199302208), (4, 99651104), (7, 56943488), (8, 49825552), (14, 28471744), (16, 24912776), (28, 14235872), (32, 12456388), (49, 8134784), (56, 7117936), (64, 6228194), (98, 4067392), (112, 3558968), (128, 3114097), (196, 2033696), (224, 1779484), (343, 1162112), (392, 1016848), (448, 889742), (686, 581056), (784, 508424), (896, 444871), (1297, 307328), (1372, 290528), (1568, 254212), (2401, 166016), (2594, 153664), (2744, 145264), (3136, 127106), (4802, 83008), (5188, 76832), (5488, 72632), (6272, 63553), (9079, 43904), (9604, 41504), (10376, 38416), (10976, 36316), (18158, 21952), (19208, 20752)]