21180912

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 58737312

約数和(自身を除く): 37556400

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 101, 102, 136, 202, 204, 257, 272, 303, 404, 408, 514, 606, 771, 808, 816, 1028, 1212, 1542, 1616, 1717, 2056, 2424, 3084, 3434, 4112, 4369, 4848, 5151, 6168, 6868, 8738, 10302, 12336, 13107, 13736, 17476, 20604, 25957, 26214, 27472, 34952, 41208, 51914, 52428, 69904, 77871, 82416, 103828, 104856, 155742, 207656, 209712, 311484, 415312, 441269, 622968, 882538, 1245936, 1323807, 1765076, 2647614, 3530152, 5295228, 7060304, 10590456, 21180912]

約数ペア:

[(1, 21180912), (2, 10590456), (3, 7060304), (4, 5295228), (6, 3530152), (8, 2647614), (12, 1765076), (16, 1323807), (17, 1245936), (24, 882538), (34, 622968), (48, 441269), (51, 415312), (68, 311484), (101, 209712), (102, 207656), (136, 155742), (202, 104856), (204, 103828), (257, 82416), (272, 77871), (303, 69904), (404, 52428), (408, 51914), (514, 41208), (606, 34952), (771, 27472), (808, 26214), (816, 25957), (1028, 20604), (1212, 17476), (1542, 13736), (1616, 13107), (1717, 12336), (2056, 10302), (2424, 8738), (3084, 6868), (3434, 6168), (4112, 5151), (4369, 4848)]