20481912040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{827}}^1\times {\mathrm{19973}}^1$

素因数の和:20842

約数の個数: 64

約数和(自身を含む): 47630799360

約数和(自身を除く): 27148887320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 827, 1240, 1654, 3308, 4135, 6616, 8270, 16540, 19973, 25637, 33080, 39946, 51274, 79892, 99865, 102548, 128185, 159784, 199730, 205096, 256370, 399460, 512740, 619163, 798920, 1025480, 1238326, 2476652, 3095815, 4953304, 6191630, 12383260, 16517671, 24766520, 33035342, 66070684, 82588355, 132141368, 165176710, 330353420, 512047801, 660706840, 1024095602, 2048191204, 2560239005, 4096382408, 5120478010, 10240956020, 20481912040]

約数ペア:

[(1, 20481912040), (2, 10240956020), (4, 5120478010), (5, 4096382408), (8, 2560239005), (10, 2048191204), (20, 1024095602), (31, 660706840), (40, 512047801), (62, 330353420), (124, 165176710), (155, 132141368), (248, 82588355), (310, 66070684), (620, 33035342), (827, 24766520), (1240, 16517671), (1654, 12383260), (3308, 6191630), (4135, 4953304), (6616, 3095815), (8270, 2476652), (16540, 1238326), (19973, 1025480), (25637, 798920), (33080, 619163), (39946, 512740), (51274, 399460), (79892, 256370), (99865, 205096), (102548, 199730), (128185, 159784)]