20815736

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22729864

約数列:

[1, 2, 4, 8, 23, 29, 46, 47, 58, 83, 92, 94, 116, 166, 184, 188, 232, 332, 376, 664, 667, 1081, 1334, 1363, 1909, 2162, 2407, 2668, 2726, 3818, 3901, 4324, 4814, 5336, 5452, 7636, 7802, 8648, 9628, 10904, 15272, 15604, 19256, 31208, 31349, 55361, 62698, 89723, 110722, 113129, 125396, 179446, 221444, 226258, 250792, 358892, 442888, 452516, 717784, 905032, 2601967, 5203934, 10407868, 20815736]

約数ペア:

[(1, 20815736), (2, 10407868), (4, 5203934), (8, 2601967), (23, 905032), (29, 717784), (46, 452516), (47, 442888), (58, 358892), (83, 250792), (92, 226258), (94, 221444), (116, 179446), (166, 125396), (184, 113129), (188, 110722), (232, 89723), (332, 62698), (376, 55361), (664, 31349), (667, 31208), (1081, 19256), (1334, 15604), (1363, 15272), (1909, 10904), (2162, 9628), (2407, 8648), (2668, 7802), (2726, 7636), (3818, 5452), (3901, 5336), (4324, 4814)]