81828440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1607}}^1$

素因数の和:1704

約数の個数: 64

約数和(自身を含む): 196819200

約数和(自身を除く): 114990760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 67, 76, 95, 134, 152, 190, 268, 335, 380, 536, 670, 760, 1273, 1340, 1607, 2546, 2680, 3214, 5092, 6365, 6428, 8035, 10184, 12730, 12856, 16070, 25460, 30533, 32140, 50920, 61066, 64280, 107669, 122132, 152665, 215338, 244264, 305330, 430676, 538345, 610660, 861352, 1076690, 1221320, 2045711, 2153380, 4091422, 4306760, 8182844, 10228555, 16365688, 20457110, 40914220, 81828440]

約数ペア:

[(1, 81828440), (2, 40914220), (4, 20457110), (5, 16365688), (8, 10228555), (10, 8182844), (19, 4306760), (20, 4091422), (38, 2153380), (40, 2045711), (67, 1221320), (76, 1076690), (95, 861352), (134, 610660), (152, 538345), (190, 430676), (268, 305330), (335, 244264), (380, 215338), (536, 152665), (670, 122132), (760, 107669), (1273, 64280), (1340, 61066), (1607, 50920), (2546, 32140), (2680, 30533), (3214, 25460), (5092, 16070), (6365, 12856), (6428, 12730), (8035, 10184)]