31491460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{13}}^2$

素因数の和:75

約数の個数: 144

約数和(自身を含む): 90018432

約数和(自身を除く): 58526972

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 121, 130, 140, 143, 154, 169, 182, 220, 242, 260, 286, 308, 338, 364, 385, 455, 484, 572, 605, 676, 715, 770, 845, 847, 910, 1001, 1183, 1210, 1331, 1430, 1540, 1573, 1690, 1694, 1820, 1859, 2002, 2366, 2420, 2662, 2860, 3146, 3380, 3388, 3718, 4004, 4235, 4732, 5005, 5324, 5915, 6292, 6655, 7436, 7865, 8470, 9295, 9317, 10010, 11011, 11830, 13013, 13310, 15730, 16940, 17303, 18590, 18634, 20020, 20449, 22022, 23660, 26026, 26620, 31460, 34606, 37180, 37268, 40898, 44044, 46585, 52052, 55055, 65065, 69212, 81796, 86515, 93170, 102245, 110110, 121121, 130130, 143143, 173030, 186340, 204490, 220220, 224939, 242242, 260260, 286286, 346060, 408980, 449878, 484484, 572572, 605605, 715715, 899756, 1124695, 1211210, 1431430, 1574573, 2249390, 2422420, 2862860, 3149146, 4498780, 6298292, 7872865, 15745730, 31491460]

約数ペア:

[(1, 31491460), (2, 15745730), (4, 7872865), (5, 6298292), (7, 4498780), (10, 3149146), (11, 2862860), (13, 2422420), (14, 2249390), (20, 1574573), (22, 1431430), (26, 1211210), (28, 1124695), (35, 899756), (44, 715715), (52, 605605), (55, 572572), (65, 484484), (70, 449878), (77, 408980), (91, 346060), (110, 286286), (121, 260260), (130, 242242), (140, 224939), (143, 220220), (154, 204490), (169, 186340), (182, 173030), (220, 143143), (242, 130130), (260, 121121), (286, 110110), (308, 102245), (338, 93170), (364, 86515), (385, 81796), (455, 69212), (484, 65065), (572, 55055), (605, 52052), (676, 46585), (715, 44044), (770, 40898), (845, 37268), (847, 37180), (910, 34606), (1001, 31460), (1183, 26620), (1210, 26026), (1331, 23660), (1430, 22022), (1540, 20449), (1573, 20020), (1690, 18634), (1694, 18590), (1820, 17303), (1859, 16940), (2002, 15730), (2366, 13310), (2420, 13013), (2662, 11830), (2860, 11011), (3146, 10010), (3380, 9317), (3388, 9295), (3718, 8470), (4004, 7865), (4235, 7436), (4732, 6655), (5005, 6292), (5324, 5915)]