20306500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{2389}}^1$

素因数の和:2425

約数の個数: 48

約数和(自身を含む): 46977840

約数和(自身を除く): 26671340

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 170, 250, 340, 425, 500, 850, 1700, 2125, 2389, 4250, 4778, 8500, 9556, 11945, 23890, 40613, 47780, 59725, 81226, 119450, 162452, 203065, 238900, 298625, 406130, 597250, 812260, 1015325, 1194500, 2030650, 4061300, 5076625, 10153250, 20306500]

約数ペア:

[(1, 20306500), (2, 10153250), (4, 5076625), (5, 4061300), (10, 2030650), (17, 1194500), (20, 1015325), (25, 812260), (34, 597250), (50, 406130), (68, 298625), (85, 238900), (100, 203065), (125, 162452), (170, 119450), (250, 81226), (340, 59725), (425, 47780), (500, 40613), (850, 23890), (1700, 11945), (2125, 9556), (2389, 8500), (4250, 4778)]