20979220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{773}}^1$

素因数の和:864

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 25832300

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 59, 92, 115, 118, 230, 236, 295, 460, 590, 773, 1180, 1357, 1546, 2714, 3092, 3865, 5428, 6785, 7730, 13570, 15460, 17779, 27140, 35558, 45607, 71116, 88895, 91214, 177790, 182428, 228035, 355580, 456070, 912140, 1048961, 2097922, 4195844, 5244805, 10489610, 20979220]

約数ペア:

[(1, 20979220), (2, 10489610), (4, 5244805), (5, 4195844), (10, 2097922), (20, 1048961), (23, 912140), (46, 456070), (59, 355580), (92, 228035), (115, 182428), (118, 177790), (230, 91214), (236, 88895), (295, 71116), (460, 45607), (590, 35558), (773, 27140), (1180, 17779), (1357, 15460), (1546, 13570), (2714, 7730), (3092, 6785), (3865, 5428)]