21682040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{607}}^1$

素因数の和:684

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 30849160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 607, 760, 893, 940, 1214, 1786, 1880, 2428, 3035, 3572, 4465, 4856, 6070, 7144, 8930, 11533, 12140, 17860, 23066, 24280, 28529, 35720, 46132, 57058, 57665, 92264, 114116, 115330, 142645, 228232, 230660, 285290, 461320, 542051, 570580, 1084102, 1141160, 2168204, 2710255, 4336408, 5420510, 10841020, 21682040]

約数ペア:

[(1, 21682040), (2, 10841020), (4, 5420510), (5, 4336408), (8, 2710255), (10, 2168204), (19, 1141160), (20, 1084102), (38, 570580), (40, 542051), (47, 461320), (76, 285290), (94, 230660), (95, 228232), (152, 142645), (188, 115330), (190, 114116), (235, 92264), (376, 57665), (380, 57058), (470, 46132), (607, 35720), (760, 28529), (893, 24280), (940, 23066), (1214, 17860), (1786, 12140), (1880, 11533), (2428, 8930), (3035, 7144), (3572, 6070), (4465, 4856)]