20686428

素因数分解:

$2^2\times 3^4\times 7^2\times {\mathrm{1303}}^1$

素因数の和:1333

約数の個数: 90

約数和(自身を含む): 62955816

約数和(自身を除く): 42269388

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 49, 54, 63, 81, 84, 98, 108, 126, 147, 162, 189, 196, 252, 294, 324, 378, 441, 567, 588, 756, 882, 1134, 1303, 1323, 1764, 2268, 2606, 2646, 3909, 3969, 5212, 5292, 7818, 7938, 9121, 11727, 15636, 15876, 18242, 23454, 27363, 35181, 36484, 46908, 54726, 63847, 70362, 82089, 105543, 109452, 127694, 140724, 164178, 191541, 211086, 246267, 255388, 328356, 383082, 422172, 492534, 574623, 738801, 766164, 985068, 1149246, 1477602, 1723869, 2298492, 2955204, 3447738, 5171607, 6895476, 10343214, 20686428]

約数ペア:

[(1, 20686428), (2, 10343214), (3, 6895476), (4, 5171607), (6, 3447738), (7, 2955204), (9, 2298492), (12, 1723869), (14, 1477602), (18, 1149246), (21, 985068), (27, 766164), (28, 738801), (36, 574623), (42, 492534), (49, 422172), (54, 383082), (63, 328356), (81, 255388), (84, 246267), (98, 211086), (108, 191541), (126, 164178), (147, 140724), (162, 127694), (189, 109452), (196, 105543), (252, 82089), (294, 70362), (324, 63847), (378, 54726), (441, 46908), (567, 36484), (588, 35181), (756, 27363), (882, 23454), (1134, 18242), (1303, 15876), (1323, 15636), (1764, 11727), (2268, 9121), (2606, 7938), (2646, 7818), (3909, 5292), (3969, 5212)]