81778340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:381

約数の個数: 96

約数和(自身を含む): 207567360

約数和(自身を除く): 125789020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 109, 115, 140, 161, 218, 230, 233, 322, 436, 460, 466, 545, 644, 763, 805, 932, 1090, 1165, 1526, 1610, 1631, 2180, 2330, 2507, 3052, 3220, 3262, 3815, 4660, 5014, 5359, 6524, 7630, 8155, 10028, 10718, 12535, 15260, 16310, 17549, 21436, 25070, 25397, 26795, 32620, 35098, 37513, 50140, 50794, 53590, 70196, 75026, 87745, 101588, 107180, 126985, 150052, 175490, 177779, 187565, 253970, 350980, 355558, 375130, 507940, 584131, 711116, 750260, 888895, 1168262, 1777790, 2336524, 2920655, 3555580, 4088917, 5841310, 8177834, 11682620, 16355668, 20444585, 40889170, 81778340]

約数ペア:

[(1, 81778340), (2, 40889170), (4, 20444585), (5, 16355668), (7, 11682620), (10, 8177834), (14, 5841310), (20, 4088917), (23, 3555580), (28, 2920655), (35, 2336524), (46, 1777790), (70, 1168262), (92, 888895), (109, 750260), (115, 711116), (140, 584131), (161, 507940), (218, 375130), (230, 355558), (233, 350980), (322, 253970), (436, 187565), (460, 177779), (466, 175490), (545, 150052), (644, 126985), (763, 107180), (805, 101588), (932, 87745), (1090, 75026), (1165, 70196), (1526, 53590), (1610, 50794), (1631, 50140), (2180, 37513), (2330, 35098), (2507, 32620), (3052, 26795), (3220, 25397), (3262, 25070), (3815, 21436), (4660, 17549), (5014, 16310), (5359, 15260), (6524, 12535), (7630, 10718), (8155, 10028)]