21291888

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{269}}^1$

素因数の和:394

約数の個数: 80

約数和(自身を含む): 59058720

約数和(自身を除く): 37766832

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 97, 102, 136, 194, 204, 269, 272, 291, 388, 408, 538, 582, 776, 807, 816, 1076, 1164, 1552, 1614, 1649, 2152, 2328, 3228, 3298, 4304, 4573, 4656, 4947, 6456, 6596, 9146, 9894, 12912, 13192, 13719, 18292, 19788, 26093, 26384, 27438, 36584, 39576, 52186, 54876, 73168, 78279, 79152, 104372, 109752, 156558, 208744, 219504, 313116, 417488, 443581, 626232, 887162, 1252464, 1330743, 1774324, 2661486, 3548648, 5322972, 7097296, 10645944, 21291888]

約数ペア:

[(1, 21291888), (2, 10645944), (3, 7097296), (4, 5322972), (6, 3548648), (8, 2661486), (12, 1774324), (16, 1330743), (17, 1252464), (24, 887162), (34, 626232), (48, 443581), (51, 417488), (68, 313116), (97, 219504), (102, 208744), (136, 156558), (194, 109752), (204, 104372), (269, 79152), (272, 78279), (291, 73168), (388, 54876), (408, 52186), (538, 39576), (582, 36584), (776, 27438), (807, 26384), (816, 26093), (1076, 19788), (1164, 18292), (1552, 13719), (1614, 13192), (1649, 12912), (2152, 9894), (2328, 9146), (3228, 6596), (3298, 6456), (4304, 4947), (4573, 4656)]