81166540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:336

約数の個数: 144

約数和(自身を含む): 223618752

約数和(自身を除く): 142452212

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 49, 52, 65, 70, 91, 92, 98, 115, 130, 140, 161, 182, 196, 230, 245, 260, 277, 299, 322, 364, 455, 460, 490, 554, 598, 637, 644, 805, 910, 980, 1108, 1127, 1196, 1274, 1385, 1495, 1610, 1820, 1939, 2093, 2254, 2548, 2770, 2990, 3185, 3220, 3601, 3878, 4186, 4508, 5540, 5635, 5980, 6370, 6371, 7202, 7756, 8372, 9695, 10465, 11270, 12740, 12742, 13573, 14404, 14651, 18005, 19390, 20930, 22540, 25207, 25484, 27146, 29302, 31855, 36010, 38780, 41860, 44597, 50414, 54292, 58604, 63710, 67865, 72020, 73255, 82823, 89194, 100828, 126035, 127420, 135730, 146510, 165646, 176449, 178388, 222985, 252070, 271460, 293020, 312179, 331292, 352898, 414115, 445970, 504140, 579761, 624358, 705796, 828230, 882245, 891940, 1159522, 1248716, 1560895, 1656460, 1764490, 2319044, 2898805, 3121790, 3528980, 4058327, 5797610, 6243580, 8116654, 11595220, 16233308, 20291635, 40583270, 81166540]

約数ペア:

[(1, 81166540), (2, 40583270), (4, 20291635), (5, 16233308), (7, 11595220), (10, 8116654), (13, 6243580), (14, 5797610), (20, 4058327), (23, 3528980), (26, 3121790), (28, 2898805), (35, 2319044), (46, 1764490), (49, 1656460), (52, 1560895), (65, 1248716), (70, 1159522), (91, 891940), (92, 882245), (98, 828230), (115, 705796), (130, 624358), (140, 579761), (161, 504140), (182, 445970), (196, 414115), (230, 352898), (245, 331292), (260, 312179), (277, 293020), (299, 271460), (322, 252070), (364, 222985), (455, 178388), (460, 176449), (490, 165646), (554, 146510), (598, 135730), (637, 127420), (644, 126035), (805, 100828), (910, 89194), (980, 82823), (1108, 73255), (1127, 72020), (1196, 67865), (1274, 63710), (1385, 58604), (1495, 54292), (1610, 50414), (1820, 44597), (1939, 41860), (2093, 38780), (2254, 36010), (2548, 31855), (2770, 29302), (2990, 27146), (3185, 25484), (3220, 25207), (3601, 22540), (3878, 20930), (4186, 19390), (4508, 18005), (5540, 14651), (5635, 14404), (5980, 13573), (6370, 12742), (6371, 12740), (7202, 11270), (7756, 10465), (8372, 9695)]