399707980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{523}}^1$

素因数の和:695

約数の個数: 96

約数和(自身を含む): 988775424

約数和(自身を除く): 589067444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 103, 106, 140, 206, 212, 265, 371, 412, 515, 523, 530, 721, 742, 1030, 1046, 1060, 1442, 1484, 1855, 2060, 2092, 2615, 2884, 3605, 3661, 3710, 5230, 5459, 7210, 7322, 7420, 10460, 10918, 14420, 14644, 18305, 21836, 27295, 27719, 36610, 38213, 53869, 54590, 55438, 73220, 76426, 107738, 109180, 110876, 138595, 152852, 191065, 194033, 215476, 269345, 277190, 377083, 382130, 388066, 538690, 554380, 754166, 764260, 776132, 970165, 1077380, 1508332, 1885415, 1940330, 2855057, 3770830, 3880660, 5710114, 7541660, 11420228, 14275285, 19985399, 28550570, 39970798, 57101140, 79941596, 99926995, 199853990, 399707980]

約数ペア:

[(1, 399707980), (2, 199853990), (4, 99926995), (5, 79941596), (7, 57101140), (10, 39970798), (14, 28550570), (20, 19985399), (28, 14275285), (35, 11420228), (53, 7541660), (70, 5710114), (103, 3880660), (106, 3770830), (140, 2855057), (206, 1940330), (212, 1885415), (265, 1508332), (371, 1077380), (412, 970165), (515, 776132), (523, 764260), (530, 754166), (721, 554380), (742, 538690), (1030, 388066), (1046, 382130), (1060, 377083), (1442, 277190), (1484, 269345), (1855, 215476), (2060, 194033), (2092, 191065), (2615, 152852), (2884, 138595), (3605, 110876), (3661, 109180), (3710, 107738), (5230, 76426), (5459, 73220), (7210, 55438), (7322, 54590), (7420, 53869), (10460, 38213), (10918, 36610), (14420, 27719), (14644, 27295), (18305, 21836)]