21016788

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{677}}^1$

素因数の和:896

約数の個数: 48

約数和(自身を含む): 53155200

約数和(自身を除く): 32138412

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 199, 398, 597, 677, 796, 1194, 1354, 2031, 2388, 2587, 2708, 4062, 5174, 7761, 8124, 8801, 10348, 15522, 17602, 26403, 31044, 35204, 52806, 105612, 134723, 269446, 404169, 538892, 808338, 1616676, 1751399, 3502798, 5254197, 7005596, 10508394, 21016788]

約数ペア:

[(1, 21016788), (2, 10508394), (3, 7005596), (4, 5254197), (6, 3502798), (12, 1751399), (13, 1616676), (26, 808338), (39, 538892), (52, 404169), (78, 269446), (156, 134723), (199, 105612), (398, 52806), (597, 35204), (677, 31044), (796, 26403), (1194, 17602), (1354, 15522), (2031, 10348), (2388, 8801), (2587, 8124), (2708, 7761), (4062, 5174)]