155317720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{1237}}^1$

素因数の和:1364

約数の個数: 64

約数和(自身を含む): 362783520

約数和(自身を除く): 207465800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 73, 86, 146, 172, 215, 292, 344, 365, 430, 584, 730, 860, 1237, 1460, 1720, 2474, 2920, 3139, 4948, 6185, 6278, 9896, 12370, 12556, 15695, 24740, 25112, 31390, 49480, 53191, 62780, 90301, 106382, 125560, 180602, 212764, 265955, 361204, 425528, 451505, 531910, 722408, 903010, 1063820, 1806020, 2127640, 3612040, 3882943, 7765886, 15531772, 19414715, 31063544, 38829430, 77658860, 155317720]

約数ペア:

[(1, 155317720), (2, 77658860), (4, 38829430), (5, 31063544), (8, 19414715), (10, 15531772), (20, 7765886), (40, 3882943), (43, 3612040), (73, 2127640), (86, 1806020), (146, 1063820), (172, 903010), (215, 722408), (292, 531910), (344, 451505), (365, 425528), (430, 361204), (584, 265955), (730, 212764), (860, 180602), (1237, 125560), (1460, 106382), (1720, 90301), (2474, 62780), (2920, 53191), (3139, 49480), (4948, 31390), (6185, 25112), (6278, 24740), (9896, 15695), (12370, 12556)]