31939180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:168

約数の個数: 144

約数和(自身を含む): 88482240

約数和(自身を除く): 56543060

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 49, 52, 65, 70, 91, 92, 98, 109, 115, 130, 140, 161, 182, 196, 218, 230, 245, 260, 299, 322, 364, 436, 455, 460, 490, 545, 598, 637, 644, 763, 805, 910, 980, 1090, 1127, 1196, 1274, 1417, 1495, 1526, 1610, 1820, 2093, 2180, 2254, 2507, 2548, 2834, 2990, 3052, 3185, 3220, 3815, 4186, 4508, 5014, 5341, 5635, 5668, 5980, 6370, 7085, 7630, 8372, 9919, 10028, 10465, 10682, 11270, 12535, 12740, 14170, 14651, 15260, 17549, 19838, 20930, 21364, 22540, 25070, 26705, 28340, 29302, 32591, 35098, 39676, 41860, 49595, 50140, 53410, 58604, 65182, 69433, 70196, 73255, 87745, 99190, 106820, 122843, 130364, 138866, 146510, 162955, 175490, 198380, 228137, 245686, 277732, 293020, 325910, 347165, 350980, 456274, 491372, 614215, 651820, 694330, 912548, 1140685, 1228430, 1388660, 1596959, 2281370, 2456860, 3193918, 4562740, 6387836, 7984795, 15969590, 31939180]

約数ペア:

[(1, 31939180), (2, 15969590), (4, 7984795), (5, 6387836), (7, 4562740), (10, 3193918), (13, 2456860), (14, 2281370), (20, 1596959), (23, 1388660), (26, 1228430), (28, 1140685), (35, 912548), (46, 694330), (49, 651820), (52, 614215), (65, 491372), (70, 456274), (91, 350980), (92, 347165), (98, 325910), (109, 293020), (115, 277732), (130, 245686), (140, 228137), (161, 198380), (182, 175490), (196, 162955), (218, 146510), (230, 138866), (245, 130364), (260, 122843), (299, 106820), (322, 99190), (364, 87745), (436, 73255), (455, 70196), (460, 69433), (490, 65182), (545, 58604), (598, 53410), (637, 50140), (644, 49595), (763, 41860), (805, 39676), (910, 35098), (980, 32591), (1090, 29302), (1127, 28340), (1196, 26705), (1274, 25070), (1417, 22540), (1495, 21364), (1526, 20930), (1610, 19838), (1820, 17549), (2093, 15260), (2180, 14651), (2254, 14170), (2507, 12740), (2548, 12535), (2834, 11270), (2990, 10682), (3052, 10465), (3185, 10028), (3220, 9919), (3815, 8372), (4186, 7630), (4508, 7085), (5014, 6370), (5341, 5980), (5635, 5668)]