209919620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{3331}}^1$

素因数の和:3500

約数の個数: 48

約数和(自身を含む): 463494528

約数和(自身を除く): 253574908

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 137, 230, 274, 460, 548, 685, 1370, 2740, 3151, 3331, 6302, 6662, 12604, 13324, 15755, 16655, 31510, 33310, 63020, 66620, 76613, 153226, 306452, 383065, 456347, 766130, 912694, 1532260, 1825388, 2281735, 4563470, 9126940, 10495981, 20991962, 41983924, 52479905, 104959810, 209919620]

約数ペア:

[(1, 209919620), (2, 104959810), (4, 52479905), (5, 41983924), (10, 20991962), (20, 10495981), (23, 9126940), (46, 4563470), (92, 2281735), (115, 1825388), (137, 1532260), (230, 912694), (274, 766130), (460, 456347), (548, 383065), (685, 306452), (1370, 153226), (2740, 76613), (3151, 66620), (3331, 63020), (6302, 33310), (6662, 31510), (12604, 16655), (13324, 15755)]