31611320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 128

約数和(自身を含む): 82736640

約数和(自身を除く): 51125320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 37, 40, 52, 53, 62, 65, 74, 104, 106, 124, 130, 148, 155, 185, 212, 248, 260, 265, 296, 310, 370, 403, 424, 481, 520, 530, 620, 689, 740, 806, 962, 1060, 1147, 1240, 1378, 1480, 1612, 1643, 1924, 1961, 2015, 2120, 2294, 2405, 2756, 3224, 3286, 3445, 3848, 3922, 4030, 4588, 4810, 5512, 5735, 6572, 6890, 7844, 8060, 8215, 9176, 9620, 9805, 11470, 13144, 13780, 14911, 15688, 16120, 16430, 19240, 19610, 21359, 22940, 25493, 27560, 29822, 32860, 39220, 42718, 45880, 50986, 59644, 60791, 65720, 74555, 78440, 85436, 101972, 106795, 119288, 121582, 127465, 149110, 170872, 203944, 213590, 243164, 254930, 298220, 303955, 427180, 486328, 509860, 596440, 607910, 790283, 854360, 1019720, 1215820, 1580566, 2431640, 3161132, 3951415, 6322264, 7902830, 15805660, 31611320]

約数ペア:

[(1, 31611320), (2, 15805660), (4, 7902830), (5, 6322264), (8, 3951415), (10, 3161132), (13, 2431640), (20, 1580566), (26, 1215820), (31, 1019720), (37, 854360), (40, 790283), (52, 607910), (53, 596440), (62, 509860), (65, 486328), (74, 427180), (104, 303955), (106, 298220), (124, 254930), (130, 243164), (148, 213590), (155, 203944), (185, 170872), (212, 149110), (248, 127465), (260, 121582), (265, 119288), (296, 106795), (310, 101972), (370, 85436), (403, 78440), (424, 74555), (481, 65720), (520, 60791), (530, 59644), (620, 50986), (689, 45880), (740, 42718), (806, 39220), (962, 32860), (1060, 29822), (1147, 27560), (1240, 25493), (1378, 22940), (1480, 21359), (1612, 19610), (1643, 19240), (1924, 16430), (1961, 16120), (2015, 15688), (2120, 14911), (2294, 13780), (2405, 13144), (2756, 11470), (3224, 9805), (3286, 9620), (3445, 9176), (3848, 8215), (3922, 8060), (4030, 7844), (4588, 6890), (4810, 6572), (5512, 5735)]