196451720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{80513}}^1$

素因数の和:80585

約数の個数: 32

約数和(自身を含む): 449268120

約数和(自身を除く): 252816400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 80513, 161026, 322052, 402565, 644104, 805130, 1610260, 3220520, 4911293, 9822586, 19645172, 24556465, 39290344, 49112930, 98225860, 196451720]

約数ペア:

[(1, 196451720), (2, 98225860), (4, 49112930), (5, 39290344), (8, 24556465), (10, 19645172), (20, 9822586), (40, 4911293), (61, 3220520), (122, 1610260), (244, 805130), (305, 644104), (488, 402565), (610, 322052), (1220, 161026), (2440, 80513)]