28978840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{983}}^1$

素因数の和:1072

約数の個数: 64

約数和(自身を含む): 72264960

約数和(自身を除く): 43286120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 67, 88, 110, 134, 220, 268, 335, 440, 536, 670, 737, 983, 1340, 1474, 1966, 2680, 2948, 3685, 3932, 4915, 5896, 7370, 7864, 9830, 10813, 14740, 19660, 21626, 29480, 39320, 43252, 54065, 65861, 86504, 108130, 131722, 216260, 263444, 329305, 432520, 526888, 658610, 724471, 1317220, 1448942, 2634440, 2897884, 3622355, 5795768, 7244710, 14489420, 28978840]

約数ペア:

[(1, 28978840), (2, 14489420), (4, 7244710), (5, 5795768), (8, 3622355), (10, 2897884), (11, 2634440), (20, 1448942), (22, 1317220), (40, 724471), (44, 658610), (55, 526888), (67, 432520), (88, 329305), (110, 263444), (134, 216260), (220, 131722), (268, 108130), (335, 86504), (440, 65861), (536, 54065), (670, 43252), (737, 39320), (983, 29480), (1340, 21626), (1474, 19660), (1966, 14740), (2680, 10813), (2948, 9830), (3685, 7864), (3932, 7370), (4915, 5896)]