28480712

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 61916400

約数和(自身を除く): 33435688

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 89, 104, 136, 178, 181, 221, 356, 362, 442, 712, 724, 884, 1157, 1448, 1513, 1768, 2314, 2353, 3026, 3077, 4628, 4706, 6052, 6154, 9256, 9412, 12104, 12308, 16109, 18824, 19669, 24616, 32218, 39338, 40001, 64436, 78676, 80002, 128872, 157352, 160004, 209417, 273853, 320008, 418834, 547706, 837668, 1095412, 1675336, 2190824, 3560089, 7120178, 14240356, 28480712]

約数ペア:

[(1, 28480712), (2, 14240356), (4, 7120178), (8, 3560089), (13, 2190824), (17, 1675336), (26, 1095412), (34, 837668), (52, 547706), (68, 418834), (89, 320008), (104, 273853), (136, 209417), (178, 160004), (181, 157352), (221, 128872), (356, 80002), (362, 78676), (442, 64436), (712, 40001), (724, 39338), (884, 32218), (1157, 24616), (1448, 19669), (1513, 18824), (1768, 16109), (2314, 12308), (2353, 12104), (3026, 9412), (3077, 9256), (4628, 6154), (4706, 6052)]