81551876

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 178113600

約数和(自身を除く): 96561724

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 61, 76, 98, 122, 133, 196, 244, 266, 359, 427, 532, 718, 854, 931, 1159, 1436, 1708, 1862, 2318, 2513, 2989, 3724, 4636, 5026, 5978, 6821, 8113, 10052, 11956, 13642, 16226, 17591, 21899, 27284, 32452, 35182, 43798, 47747, 56791, 70364, 87596, 95494, 113582, 153293, 190988, 227164, 306586, 334229, 416081, 613172, 668458, 832162, 1073051, 1336916, 1664324, 2146102, 2912567, 4292204, 5825134, 11650268, 20387969, 40775938, 81551876]

約数ペア:

[(1, 81551876), (2, 40775938), (4, 20387969), (7, 11650268), (14, 5825134), (19, 4292204), (28, 2912567), (38, 2146102), (49, 1664324), (61, 1336916), (76, 1073051), (98, 832162), (122, 668458), (133, 613172), (196, 416081), (244, 334229), (266, 306586), (359, 227164), (427, 190988), (532, 153293), (718, 113582), (854, 95494), (931, 87596), (1159, 70364), (1436, 56791), (1708, 47747), (1862, 43798), (2318, 35182), (2513, 32452), (2989, 27284), (3724, 21899), (4636, 17591), (5026, 16226), (5978, 13642), (6821, 11956), (8113, 10052)]