208678260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{70979}}^1$

素因数の和:71005

約数の個数: 72

約数和(自身を含む): 679704480

約数和(自身を除く): 471026220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 70979, 141958, 212937, 283916, 354895, 425874, 496853, 709790, 851748, 993706, 1064685, 1419580, 1490559, 1987412, 2129370, 2484265, 2981118, 3477971, 4258740, 4968530, 5962236, 6955942, 7452795, 9937060, 10433913, 13911884, 14905590, 17389855, 20867826, 29811180, 34779710, 41735652, 52169565, 69559420, 104339130, 208678260]

約数ペア:

[(1, 208678260), (2, 104339130), (3, 69559420), (4, 52169565), (5, 41735652), (6, 34779710), (7, 29811180), (10, 20867826), (12, 17389855), (14, 14905590), (15, 13911884), (20, 10433913), (21, 9937060), (28, 7452795), (30, 6955942), (35, 5962236), (42, 4968530), (49, 4258740), (60, 3477971), (70, 2981118), (84, 2484265), (98, 2129370), (105, 1987412), (140, 1490559), (147, 1419580), (196, 1064685), (210, 993706), (245, 851748), (294, 709790), (420, 496853), (490, 425874), (588, 354895), (735, 283916), (980, 212937), (1470, 141958), (2940, 70979)]