78671360

素因数分解:

$2^9\times 5^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:491

約数の個数: 80

約数和(自身を含む): 191505600

約数和(自身を除く): 112834240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 389, 395, 512, 632, 640, 778, 790, 1264, 1280, 1556, 1580, 1945, 2528, 2560, 3112, 3160, 3890, 5056, 6224, 6320, 7780, 10112, 12448, 12640, 15560, 20224, 24896, 25280, 30731, 31120, 40448, 49792, 50560, 61462, 62240, 99584, 101120, 122924, 124480, 153655, 199168, 202240, 245848, 248960, 307310, 491696, 497920, 614620, 983392, 995840, 1229240, 1966784, 2458480, 3933568, 4916960, 7867136, 9833920, 15734272, 19667840, 39335680, 78671360]

約数ペア:

[(1, 78671360), (2, 39335680), (4, 19667840), (5, 15734272), (8, 9833920), (10, 7867136), (16, 4916960), (20, 3933568), (32, 2458480), (40, 1966784), (64, 1229240), (79, 995840), (80, 983392), (128, 614620), (158, 497920), (160, 491696), (256, 307310), (316, 248960), (320, 245848), (389, 202240), (395, 199168), (512, 153655), (632, 124480), (640, 122924), (778, 101120), (790, 99584), (1264, 62240), (1280, 61462), (1556, 50560), (1580, 49792), (1945, 40448), (2528, 31120), (2560, 30731), (3112, 25280), (3160, 24896), (3890, 20224), (5056, 15560), (6224, 12640), (6320, 12448), (7780, 10112)]