20920704

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:248

約数の個数: 128

約数和(自身を含む): 65345280

約数和(自身を除く): 44424576

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 43, 48, 56, 64, 84, 86, 96, 112, 128, 129, 168, 172, 181, 192, 224, 258, 301, 336, 344, 362, 384, 448, 516, 543, 602, 672, 688, 724, 896, 903, 1032, 1086, 1204, 1267, 1344, 1376, 1448, 1806, 2064, 2172, 2408, 2534, 2688, 2752, 2896, 3612, 3801, 4128, 4344, 4816, 5068, 5504, 5792, 7224, 7602, 7783, 8256, 8688, 9632, 10136, 11584, 14448, 15204, 15566, 16512, 17376, 19264, 20272, 23168, 23349, 28896, 30408, 31132, 34752, 38528, 40544, 46698, 54481, 57792, 60816, 62264, 69504, 81088, 93396, 108962, 115584, 121632, 124528, 162176, 163443, 186792, 217924, 243264, 249056, 326886, 373584, 435848, 486528, 498112, 653772, 747168, 871696, 996224, 1307544, 1494336, 1743392, 2615088, 2988672, 3486784, 5230176, 6973568, 10460352, 20920704]

約数ペア:

[(1, 20920704), (2, 10460352), (3, 6973568), (4, 5230176), (6, 3486784), (7, 2988672), (8, 2615088), (12, 1743392), (14, 1494336), (16, 1307544), (21, 996224), (24, 871696), (28, 747168), (32, 653772), (42, 498112), (43, 486528), (48, 435848), (56, 373584), (64, 326886), (84, 249056), (86, 243264), (96, 217924), (112, 186792), (128, 163443), (129, 162176), (168, 124528), (172, 121632), (181, 115584), (192, 108962), (224, 93396), (258, 81088), (301, 69504), (336, 62264), (344, 60816), (362, 57792), (384, 54481), (448, 46698), (516, 40544), (543, 38528), (602, 34752), (672, 31132), (688, 30408), (724, 28896), (896, 23349), (903, 23168), (1032, 20272), (1086, 19264), (1204, 17376), (1267, 16512), (1344, 15566), (1376, 15204), (1448, 14448), (1806, 11584), (2064, 10136), (2172, 9632), (2408, 8688), (2534, 8256), (2688, 7783), (2752, 7602), (2896, 7224), (3612, 5792), (3801, 5504), (4128, 5068), (4344, 4816)]