81879896

素因数分解:

$2^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:376

約数の個数: 64

約数和(自身を含む): 180499200

約数和(自身を除く): 98619304

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 67, 134, 139, 157, 268, 278, 314, 469, 536, 556, 628, 938, 973, 1099, 1112, 1256, 1876, 1946, 2198, 3752, 3892, 4396, 7784, 8792, 9313, 10519, 18626, 21038, 21823, 37252, 42076, 43646, 65191, 73633, 74504, 84152, 87292, 130382, 147266, 152761, 174584, 260764, 294532, 305522, 521528, 589064, 611044, 1222088, 1462141, 2924282, 5848564, 10234987, 11697128, 20469974, 40939948, 81879896]

約数ペア:

[(1, 81879896), (2, 40939948), (4, 20469974), (7, 11697128), (8, 10234987), (14, 5848564), (28, 2924282), (56, 1462141), (67, 1222088), (134, 611044), (139, 589064), (157, 521528), (268, 305522), (278, 294532), (314, 260764), (469, 174584), (536, 152761), (556, 147266), (628, 130382), (938, 87292), (973, 84152), (1099, 74504), (1112, 73633), (1256, 65191), (1876, 43646), (1946, 42076), (2198, 37252), (3752, 21823), (3892, 21038), (4396, 18626), (7784, 10519), (8792, 9313)]