28787040

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{19991}}^1$

素因数の和:20012

約数の個数: 72

約数和(自身を含む): 98240688

約数和(自身を除く): 69453648

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 19991, 39982, 59973, 79964, 99955, 119946, 159928, 179919, 199910, 239892, 299865, 319856, 359838, 399820, 479784, 599730, 639712, 719676, 799640, 899595, 959568, 1199460, 1439352, 1599280, 1799190, 1919136, 2398920, 2878704, 3198560, 3598380, 4797840, 5757408, 7196760, 9595680, 14393520, 28787040]

約数ペア:

[(1, 28787040), (2, 14393520), (3, 9595680), (4, 7196760), (5, 5757408), (6, 4797840), (8, 3598380), (9, 3198560), (10, 2878704), (12, 2398920), (15, 1919136), (16, 1799190), (18, 1599280), (20, 1439352), (24, 1199460), (30, 959568), (32, 899595), (36, 799640), (40, 719676), (45, 639712), (48, 599730), (60, 479784), (72, 399820), (80, 359838), (90, 319856), (96, 299865), (120, 239892), (144, 199910), (160, 179919), (180, 159928), (240, 119946), (288, 99955), (360, 79964), (480, 59973), (720, 39982), (1440, 19991)]