20895947008

素因数分解:

$2^8\times {\mathrm{43}}^1\times {\mathrm{233}}^1\times {\mathrm{8147}}^1$

素因数の和:8439

約数の個数: 72

約数和(自身を含む): 42868713888

約数和(自身を除く): 21972766880

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 233, 256, 344, 466, 688, 932, 1376, 1864, 2752, 3728, 5504, 7456, 8147, 10019, 11008, 14912, 16294, 20038, 29824, 32588, 40076, 59648, 65176, 80152, 130352, 160304, 260704, 320608, 350321, 521408, 641216, 700642, 1042816, 1282432, 1401284, 1898251, 2085632, 2564864, 2802568, 3796502, 5605136, 7593004, 11210272, 15186008, 22420544, 30372016, 44841088, 60744032, 81624793, 89682176, 121488064, 163249586, 242976128, 326499172, 485952256, 652998344, 1305996688, 2611993376, 5223986752, 10447973504, 20895947008]

約数ペア:

[(1, 20895947008), (2, 10447973504), (4, 5223986752), (8, 2611993376), (16, 1305996688), (32, 652998344), (43, 485952256), (64, 326499172), (86, 242976128), (128, 163249586), (172, 121488064), (233, 89682176), (256, 81624793), (344, 60744032), (466, 44841088), (688, 30372016), (932, 22420544), (1376, 15186008), (1864, 11210272), (2752, 7593004), (3728, 5605136), (5504, 3796502), (7456, 2802568), (8147, 2564864), (10019, 2085632), (11008, 1898251), (14912, 1401284), (16294, 1282432), (20038, 1042816), (29824, 700642), (32588, 641216), (40076, 521408), (59648, 350321), (65176, 320608), (80152, 260704), (130352, 160304)]