19702784

素因数分解:

$2^{10}\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:362

約数の個数: 44

約数和(自身を含む): 40088448

約数和(自身を除く): 20385664

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 256, 271, 284, 512, 542, 568, 1024, 1084, 1136, 2168, 2272, 4336, 4544, 8672, 9088, 17344, 18176, 19241, 34688, 36352, 38482, 69376, 72704, 76964, 138752, 153928, 277504, 307856, 615712, 1231424, 2462848, 4925696, 9851392, 19702784]

約数ペア:

[(1, 19702784), (2, 9851392), (4, 4925696), (8, 2462848), (16, 1231424), (32, 615712), (64, 307856), (71, 277504), (128, 153928), (142, 138752), (256, 76964), (271, 72704), (284, 69376), (512, 38482), (542, 36352), (568, 34688), (1024, 19241), (1084, 18176), (1136, 17344), (2168, 9088), (2272, 8672), (4336, 4544)]