20813056

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:435

約数の個数: 72

約数和(自身を含む): 47829600

約数和(自身を除く): 27016544

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 64, 76, 88, 128, 152, 176, 209, 256, 304, 352, 389, 418, 608, 704, 778, 836, 1216, 1408, 1556, 1672, 2432, 2816, 3112, 3344, 4279, 4864, 6224, 6688, 7391, 8558, 12448, 13376, 14782, 17116, 24896, 26752, 29564, 34232, 49792, 53504, 59128, 68464, 81301, 99584, 118256, 136928, 162602, 236512, 273856, 325204, 473024, 547712, 650408, 946048, 1095424, 1300816, 1892096, 2601632, 5203264, 10406528, 20813056]

約数ペア:

[(1, 20813056), (2, 10406528), (4, 5203264), (8, 2601632), (11, 1892096), (16, 1300816), (19, 1095424), (22, 946048), (32, 650408), (38, 547712), (44, 473024), (64, 325204), (76, 273856), (88, 236512), (128, 162602), (152, 136928), (176, 118256), (209, 99584), (256, 81301), (304, 68464), (352, 59128), (389, 53504), (418, 49792), (608, 34232), (704, 29564), (778, 26752), (836, 24896), (1216, 17116), (1408, 14782), (1556, 13376), (1672, 12448), (2432, 8558), (2816, 7391), (3112, 6688), (3344, 6224), (4279, 4864)]