81203720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8219}}^1$

素因数の和:8262

約数の個数: 64

約数和(自身を含む): 207144000

約数和(自身を除く): 125940280

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 8219, 9880, 16438, 32876, 41095, 65752, 82190, 106847, 156161, 164380, 213694, 312322, 328760, 427388, 534235, 624644, 780805, 854776, 1068470, 1249288, 1561610, 2030093, 2136940, 3123220, 4060186, 4273880, 6246440, 8120372, 10150465, 16240744, 20300930, 40601860, 81203720]

約数ペア:

[(1, 81203720), (2, 40601860), (4, 20300930), (5, 16240744), (8, 10150465), (10, 8120372), (13, 6246440), (19, 4273880), (20, 4060186), (26, 3123220), (38, 2136940), (40, 2030093), (52, 1561610), (65, 1249288), (76, 1068470), (95, 854776), (104, 780805), (130, 624644), (152, 534235), (190, 427388), (247, 328760), (260, 312322), (380, 213694), (494, 164380), (520, 156161), (760, 106847), (988, 82190), (1235, 65752), (1976, 41095), (2470, 32876), (4940, 16438), (8219, 9880)]