81031713

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 138240000

約数和(自身を除く): 57208287

約数列:

[1, 3, 7, 19, 21, 29, 47, 57, 87, 133, 141, 149, 203, 329, 399, 447, 551, 609, 893, 987, 1043, 1363, 1653, 2679, 2831, 3129, 3857, 4089, 4321, 6251, 7003, 8493, 9541, 11571, 12963, 18753, 19817, 21009, 25897, 28623, 30247, 49021, 59451, 77691, 82099, 90741, 133057, 147063, 181279, 203087, 246297, 399171, 543837, 574693, 609261, 931399, 1421609, 1724079, 2794197, 3858653, 4264827, 11575959, 27010571, 81031713]

約数ペア:

[(1, 81031713), (3, 27010571), (7, 11575959), (19, 4264827), (21, 3858653), (29, 2794197), (47, 1724079), (57, 1421609), (87, 931399), (133, 609261), (141, 574693), (149, 543837), (203, 399171), (329, 246297), (399, 203087), (447, 181279), (551, 147063), (609, 133057), (893, 90741), (987, 82099), (1043, 77691), (1363, 59451), (1653, 49021), (2679, 30247), (2831, 28623), (3129, 25897), (3857, 21009), (4089, 19817), (4321, 18753), (6251, 12963), (7003, 11571), (8493, 9541)]