721264516

素因数分解:

$2^2\times 7^3\times {\mathrm{131}}^1\times {\mathrm{4013}}^1$

素因数の和:4169

約数の個数: 48

約数和(自身を含む): 1483574400

約数和(自身を除く): 762309884

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 131, 196, 262, 343, 524, 686, 917, 1372, 1834, 3668, 4013, 6419, 8026, 12838, 16052, 25676, 28091, 44933, 56182, 89866, 112364, 179732, 196637, 393274, 525703, 786548, 1051406, 1376459, 2102812, 2752918, 3679921, 5505836, 7359842, 14719684, 25759447, 51518894, 103037788, 180316129, 360632258, 721264516]

約数ペア:

[(1, 721264516), (2, 360632258), (4, 180316129), (7, 103037788), (14, 51518894), (28, 25759447), (49, 14719684), (98, 7359842), (131, 5505836), (196, 3679921), (262, 2752918), (343, 2102812), (524, 1376459), (686, 1051406), (917, 786548), (1372, 525703), (1834, 393274), (3668, 196637), (4013, 179732), (6419, 112364), (8026, 89866), (12838, 56182), (16052, 44933), (25676, 28091)]