21756480

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{173}}^1$

素因数の和:324

約数の個数: 112

約数和(自身を含む): 70006464

約数和(自身を除く): 48249984

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 131, 160, 173, 192, 240, 262, 320, 346, 393, 480, 519, 524, 655, 692, 786, 865, 960, 1038, 1048, 1310, 1384, 1572, 1730, 1965, 2076, 2096, 2595, 2620, 2768, 3144, 3460, 3930, 4152, 4192, 5190, 5240, 5536, 6288, 6920, 7860, 8304, 8384, 10380, 10480, 11072, 12576, 13840, 15720, 16608, 20760, 20960, 22663, 25152, 27680, 31440, 33216, 41520, 41920, 45326, 55360, 62880, 67989, 83040, 90652, 113315, 125760, 135978, 166080, 181304, 226630, 271956, 339945, 362608, 453260, 543912, 679890, 725216, 906520, 1087824, 1359780, 1450432, 1813040, 2175648, 2719560, 3626080, 4351296, 5439120, 7252160, 10878240, 21756480]

約数ペア:

[(1, 21756480), (2, 10878240), (3, 7252160), (4, 5439120), (5, 4351296), (6, 3626080), (8, 2719560), (10, 2175648), (12, 1813040), (15, 1450432), (16, 1359780), (20, 1087824), (24, 906520), (30, 725216), (32, 679890), (40, 543912), (48, 453260), (60, 362608), (64, 339945), (80, 271956), (96, 226630), (120, 181304), (131, 166080), (160, 135978), (173, 125760), (192, 113315), (240, 90652), (262, 83040), (320, 67989), (346, 62880), (393, 55360), (480, 45326), (519, 41920), (524, 41520), (655, 33216), (692, 31440), (786, 27680), (865, 25152), (960, 22663), (1038, 20960), (1048, 20760), (1310, 16608), (1384, 15720), (1572, 13840), (1730, 12576), (1965, 11072), (2076, 10480), (2096, 10380), (2595, 8384), (2620, 8304), (2768, 7860), (3144, 6920), (3460, 6288), (3930, 5536), (4152, 5240), (4192, 5190)]