16781997808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{359}}^1\times {\mathrm{1193}}^1$

素因数の和:1670

約数の個数: 80

約数和(自身を含む): 34112102400

約数和(自身を除く): 17330104592

約数列:

[1, 2, 4, 8, 16, 31, 62, 79, 124, 158, 248, 316, 359, 496, 632, 718, 1193, 1264, 1436, 2386, 2449, 2872, 4772, 4898, 5744, 9544, 9796, 11129, 19088, 19592, 22258, 28361, 36983, 39184, 44516, 56722, 73966, 89032, 94247, 113444, 147932, 178064, 188494, 226888, 295864, 376988, 428287, 453776, 591728, 753976, 856574, 879191, 1507952, 1713148, 1758382, 2921657, 3426296, 3516764, 5843314, 6852592, 7033528, 11686628, 13276897, 14067056, 23373256, 26553794, 33834673, 46746512, 53107588, 67669346, 106215176, 135338692, 212430352, 270677384, 541354768, 1048874863, 2097749726, 4195499452, 8390998904, 16781997808]

約数ペア:

[(1, 16781997808), (2, 8390998904), (4, 4195499452), (8, 2097749726), (16, 1048874863), (31, 541354768), (62, 270677384), (79, 212430352), (124, 135338692), (158, 106215176), (248, 67669346), (316, 53107588), (359, 46746512), (496, 33834673), (632, 26553794), (718, 23373256), (1193, 14067056), (1264, 13276897), (1436, 11686628), (2386, 7033528), (2449, 6852592), (2872, 5843314), (4772, 3516764), (4898, 3426296), (5744, 2921657), (9544, 1758382), (9796, 1713148), (11129, 1507952), (19088, 879191), (19592, 856574), (22258, 753976), (28361, 591728), (36983, 453776), (39184, 428287), (44516, 376988), (56722, 295864), (73966, 226888), (89032, 188494), (94247, 178064), (113444, 147932)]