28311680

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1427}}^1$

素因数の和:1477

約数の個数: 64

約数和(自身を含む): 69914880

約数和(自身を除く): 41603200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1427, 1984, 2480, 2854, 3968, 4960, 5708, 7135, 9920, 11416, 14270, 19840, 22832, 28540, 44237, 45664, 57080, 88474, 91328, 114160, 176948, 182656, 221185, 228320, 353896, 442370, 456640, 707792, 884740, 913280, 1415584, 1769480, 2831168, 3538960, 5662336, 7077920, 14155840, 28311680]

約数ペア:

[(1, 28311680), (2, 14155840), (4, 7077920), (5, 5662336), (8, 3538960), (10, 2831168), (16, 1769480), (20, 1415584), (31, 913280), (32, 884740), (40, 707792), (62, 456640), (64, 442370), (80, 353896), (124, 228320), (128, 221185), (155, 182656), (160, 176948), (248, 114160), (310, 91328), (320, 88474), (496, 57080), (620, 45664), (640, 44237), (992, 28540), (1240, 22832), (1427, 19840), (1984, 14270), (2480, 11416), (2854, 9920), (3968, 7135), (4960, 5708)]