19995706768

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{1123}}^1\times {\mathrm{8123}}^1$

素因数の和:9391

約数の個数: 40

約数和(自身を含む): 39064026528

約数和(自身を除く): 19068319760

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 1123, 2192, 2246, 4492, 8123, 8984, 16246, 17968, 32492, 64984, 129968, 153851, 307702, 615404, 1112851, 1230808, 2225702, 2461616, 4451404, 8902808, 9122129, 17805616, 18244258, 36488516, 72977032, 145954064, 1249731673, 2499463346, 4998926692, 9997853384, 19995706768]

約数ペア:

[(1, 19995706768), (2, 9997853384), (4, 4998926692), (8, 2499463346), (16, 1249731673), (137, 145954064), (274, 72977032), (548, 36488516), (1096, 18244258), (1123, 17805616), (2192, 9122129), (2246, 8902808), (4492, 4451404), (8123, 2461616), (8984, 2225702), (16246, 1230808), (17968, 1112851), (32492, 615404), (64984, 307702), (129968, 153851)]