19971812

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 44432640

約数和(自身を除く): 24460828

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 49, 62, 76, 98, 124, 133, 173, 196, 217, 266, 346, 434, 532, 589, 692, 868, 931, 1178, 1211, 1519, 1862, 2356, 2422, 3038, 3287, 3724, 4123, 4844, 5363, 6076, 6574, 8246, 8477, 10726, 13148, 16492, 16954, 21452, 23009, 28861, 33908, 37541, 46018, 57722, 75082, 92036, 101897, 115444, 150164, 161063, 203794, 262787, 322126, 407588, 525574, 644252, 713279, 1051148, 1426558, 2853116, 4992953, 9985906, 19971812]

約数ペア:

[(1, 19971812), (2, 9985906), (4, 4992953), (7, 2853116), (14, 1426558), (19, 1051148), (28, 713279), (31, 644252), (38, 525574), (49, 407588), (62, 322126), (76, 262787), (98, 203794), (124, 161063), (133, 150164), (173, 115444), (196, 101897), (217, 92036), (266, 75082), (346, 57722), (434, 46018), (532, 37541), (589, 33908), (692, 28861), (868, 23009), (931, 21452), (1178, 16954), (1211, 16492), (1519, 13148), (1862, 10726), (2356, 8477), (2422, 8246), (3038, 6574), (3287, 6076), (3724, 5363), (4123, 4844)]