20080016

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{421}}^1$

素因数の和:711

約数の個数: 40

約数和(自身を含む): 42699648

約数和(自身を除く): 22619632

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 271, 421, 542, 842, 1084, 1684, 2168, 2981, 3368, 4336, 4631, 5962, 6736, 9262, 11924, 18524, 23848, 37048, 47696, 74096, 114091, 228182, 456364, 912728, 1255001, 1825456, 2510002, 5020004, 10040008, 20080016]

約数ペア:

[(1, 20080016), (2, 10040008), (4, 5020004), (8, 2510002), (11, 1825456), (16, 1255001), (22, 912728), (44, 456364), (88, 228182), (176, 114091), (271, 74096), (421, 47696), (542, 37048), (842, 23848), (1084, 18524), (1684, 11924), (2168, 9262), (2981, 6736), (3368, 5962), (4336, 4631)]