81878216

素因数分解:

$2^3\times 7^3\times {\mathrm{53}}^1\times {\mathrm{563}}^1$

素因数の和:643

約数の個数: 64

約数和(自身を含む): 182736000

約数和(自身を除く): 100857784

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 53, 56, 98, 106, 196, 212, 343, 371, 392, 424, 563, 686, 742, 1126, 1372, 1484, 2252, 2597, 2744, 2968, 3941, 4504, 5194, 7882, 10388, 15764, 18179, 20776, 27587, 29839, 31528, 36358, 55174, 59678, 72716, 110348, 119356, 145432, 193109, 208873, 220696, 238712, 386218, 417746, 772436, 835492, 1462111, 1544872, 1670984, 2924222, 5848444, 10234777, 11696888, 20469554, 40939108, 81878216]

約数ペア:

[(1, 81878216), (2, 40939108), (4, 20469554), (7, 11696888), (8, 10234777), (14, 5848444), (28, 2924222), (49, 1670984), (53, 1544872), (56, 1462111), (98, 835492), (106, 772436), (196, 417746), (212, 386218), (343, 238712), (371, 220696), (392, 208873), (424, 193109), (563, 145432), (686, 119356), (742, 110348), (1126, 72716), (1372, 59678), (1484, 55174), (2252, 36358), (2597, 31528), (2744, 29839), (2968, 27587), (3941, 20776), (4504, 18179), (5194, 15764), (7882, 10388)]