18928480

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6959}}^1$

素因数の和:6991

約数の個数: 48

約数和(自身を含む): 47355840

約数和(自身を除く): 28427360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 6959, 13918, 27836, 34795, 55672, 69590, 111344, 118303, 139180, 222688, 236606, 278360, 473212, 556720, 591515, 946424, 1113440, 1183030, 1892848, 2366060, 3785696, 4732120, 9464240, 18928480]

約数ペア:

[(1, 18928480), (2, 9464240), (4, 4732120), (5, 3785696), (8, 2366060), (10, 1892848), (16, 1183030), (17, 1113440), (20, 946424), (32, 591515), (34, 556720), (40, 473212), (68, 278360), (80, 236606), (85, 222688), (136, 139180), (160, 118303), (170, 111344), (272, 69590), (340, 55672), (544, 34795), (680, 27836), (1360, 13918), (2720, 6959)]