78331760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{691}}^1$

素因数の和:826

約数の個数: 80

約数和(自身を含む): 198216480

約数和(自身を除く): 119884720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 109, 130, 208, 218, 260, 436, 520, 545, 691, 872, 1040, 1090, 1382, 1417, 1744, 2180, 2764, 2834, 3455, 4360, 5528, 5668, 6910, 7085, 8720, 8983, 11056, 11336, 13820, 14170, 17966, 22672, 27640, 28340, 35932, 44915, 55280, 56680, 71864, 75319, 89830, 113360, 143728, 150638, 179660, 301276, 359320, 376595, 602552, 718640, 753190, 979147, 1205104, 1506380, 1958294, 3012760, 3916588, 4895735, 6025520, 7833176, 9791470, 15666352, 19582940, 39165880, 78331760]

約数ペア:

[(1, 78331760), (2, 39165880), (4, 19582940), (5, 15666352), (8, 9791470), (10, 7833176), (13, 6025520), (16, 4895735), (20, 3916588), (26, 3012760), (40, 1958294), (52, 1506380), (65, 1205104), (80, 979147), (104, 753190), (109, 718640), (130, 602552), (208, 376595), (218, 359320), (260, 301276), (436, 179660), (520, 150638), (545, 143728), (691, 113360), (872, 89830), (1040, 75319), (1090, 71864), (1382, 56680), (1417, 55280), (1744, 44915), (2180, 35932), (2764, 28340), (2834, 27640), (3455, 22672), (4360, 17966), (5528, 14170), (5668, 13820), (6910, 11336), (7085, 11056), (8720, 8983)]