19560393904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{491171}}^1$

素因数の和:491329

約数の個数: 40

約数和(自身を含む): 40197516480

約数和(自身を除く): 20637122576

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 131, 152, 262, 304, 524, 1048, 2096, 2489, 4978, 9956, 19912, 39824, 491171, 982342, 1964684, 3929368, 7858736, 9332249, 18664498, 37328996, 64343401, 74657992, 128686802, 149315984, 257373604, 514747208, 1029494416, 1222524619, 2445049238, 4890098476, 9780196952, 19560393904]

約数ペア:

[(1, 19560393904), (2, 9780196952), (4, 4890098476), (8, 2445049238), (16, 1222524619), (19, 1029494416), (38, 514747208), (76, 257373604), (131, 149315984), (152, 128686802), (262, 74657992), (304, 64343401), (524, 37328996), (1048, 18664498), (2096, 9332249), (2489, 7858736), (4978, 3929368), (9956, 1964684), (19912, 982342), (39824, 491171)]