81245720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{733}}^1$

素因数の和:924

約数の個数: 64

約数和(自身を含む): 195009120

約数和(自身を除く): 113763400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 163, 170, 326, 340, 652, 680, 733, 815, 1304, 1466, 1630, 2771, 2932, 3260, 3665, 5542, 5864, 6520, 7330, 11084, 12461, 13855, 14660, 22168, 24922, 27710, 29320, 49844, 55420, 62305, 99688, 110840, 119479, 124610, 238958, 249220, 477916, 498440, 597395, 955832, 1194790, 2031143, 2389580, 4062286, 4779160, 8124572, 10155715, 16249144, 20311430, 40622860, 81245720]

約数ペア:

[(1, 81245720), (2, 40622860), (4, 20311430), (5, 16249144), (8, 10155715), (10, 8124572), (17, 4779160), (20, 4062286), (34, 2389580), (40, 2031143), (68, 1194790), (85, 955832), (136, 597395), (163, 498440), (170, 477916), (326, 249220), (340, 238958), (652, 124610), (680, 119479), (733, 110840), (815, 99688), (1304, 62305), (1466, 55420), (1630, 49844), (2771, 29320), (2932, 27710), (3260, 24922), (3665, 22168), (5542, 14660), (5864, 13855), (6520, 12461), (7330, 11084)]