678237952

素因数分解:

$2^8\times 7^1\times {\mathrm{461}}^1\times {\mathrm{821}}^1$

素因数の和:1305

約数の個数: 72

約数和(自身を含む): 1552475232

約数和(自身を除く): 874237280

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 461, 821, 896, 922, 1642, 1792, 1844, 3227, 3284, 3688, 5747, 6454, 6568, 7376, 11494, 12908, 13136, 14752, 22988, 25816, 26272, 29504, 45976, 51632, 52544, 59008, 91952, 103264, 105088, 118016, 183904, 206528, 210176, 367808, 378481, 413056, 735616, 756962, 826112, 1471232, 1513924, 2649367, 3027848, 5298734, 6055696, 10597468, 12111392, 21194936, 24222784, 42389872, 48445568, 84779744, 96891136, 169559488, 339118976, 678237952]

約数ペア:

[(1, 678237952), (2, 339118976), (4, 169559488), (7, 96891136), (8, 84779744), (14, 48445568), (16, 42389872), (28, 24222784), (32, 21194936), (56, 12111392), (64, 10597468), (112, 6055696), (128, 5298734), (224, 3027848), (256, 2649367), (448, 1513924), (461, 1471232), (821, 826112), (896, 756962), (922, 735616), (1642, 413056), (1792, 378481), (1844, 367808), (3227, 210176), (3284, 206528), (3688, 183904), (5747, 118016), (6454, 105088), (6568, 103264), (7376, 91952), (11494, 59008), (12908, 52544), (13136, 51632), (14752, 45976), (22988, 29504), (25816, 26272)]