20991117026

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{541}}^1\times {\mathrm{6971}}^1$

素因数の和:7559

約数の個数: 48

約数和(自身を含む): 36186018624

約数和(自身を除く): 15194901598

約数列:

[1, 2, 11, 22, 23, 46, 121, 242, 253, 506, 541, 1082, 2783, 5566, 5951, 6971, 11902, 12443, 13942, 24886, 65461, 76681, 130922, 136873, 153362, 160333, 273746, 320666, 843491, 1505603, 1686982, 1763663, 3011206, 3527326, 3771311, 7542622, 19400293, 38800586, 41484421, 82968842, 86740153, 173480306, 456328631, 912657262, 954141683, 1908283366, 10495558513, 20991117026]

約数ペア:

[(1, 20991117026), (2, 10495558513), (11, 1908283366), (22, 954141683), (23, 912657262), (46, 456328631), (121, 173480306), (242, 86740153), (253, 82968842), (506, 41484421), (541, 38800586), (1082, 19400293), (2783, 7542622), (5566, 3771311), (5951, 3527326), (6971, 3011206), (11902, 1763663), (12443, 1686982), (13942, 1505603), (24886, 843491), (65461, 320666), (76681, 273746), (130922, 160333), (136873, 153362)]