81781928

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 170640000

約数和(自身を除く): 88858072

約数列:

[1, 2, 4, 8, 19, 23, 38, 46, 76, 92, 149, 152, 157, 184, 298, 314, 437, 596, 628, 874, 1192, 1256, 1748, 2831, 2983, 3427, 3496, 3611, 5662, 5966, 6854, 7222, 11324, 11932, 13708, 14444, 22648, 23393, 23864, 27416, 28888, 46786, 65113, 68609, 93572, 130226, 137218, 187144, 260452, 274436, 444467, 520904, 538039, 548872, 888934, 1076078, 1777868, 2152156, 3555736, 4304312, 10222741, 20445482, 40890964, 81781928]

約数ペア:

[(1, 81781928), (2, 40890964), (4, 20445482), (8, 10222741), (19, 4304312), (23, 3555736), (38, 2152156), (46, 1777868), (76, 1076078), (92, 888934), (149, 548872), (152, 538039), (157, 520904), (184, 444467), (298, 274436), (314, 260452), (437, 187144), (596, 137218), (628, 130226), (874, 93572), (1192, 68609), (1256, 65113), (1748, 46786), (2831, 28888), (2983, 27416), (3427, 23864), (3496, 23393), (3611, 22648), (5662, 14444), (5966, 13708), (6854, 11932), (7222, 11324)]