20317648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 45997056

約数和(自身を除く): 25679408

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 31, 46, 52, 62, 92, 104, 124, 137, 184, 208, 248, 274, 299, 368, 403, 496, 548, 598, 713, 806, 1096, 1196, 1426, 1612, 1781, 2192, 2392, 2852, 3151, 3224, 3562, 4247, 4784, 5704, 6302, 6448, 7124, 8494, 9269, 11408, 12604, 14248, 16988, 18538, 25208, 28496, 33976, 37076, 40963, 50416, 55211, 67952, 74152, 81926, 97681, 110422, 148304, 163852, 195362, 220844, 327704, 390724, 441688, 655408, 781448, 883376, 1269853, 1562896, 2539706, 5079412, 10158824, 20317648]

約数ペア:

[(1, 20317648), (2, 10158824), (4, 5079412), (8, 2539706), (13, 1562896), (16, 1269853), (23, 883376), (26, 781448), (31, 655408), (46, 441688), (52, 390724), (62, 327704), (92, 220844), (104, 195362), (124, 163852), (137, 148304), (184, 110422), (208, 97681), (248, 81926), (274, 74152), (299, 67952), (368, 55211), (403, 50416), (496, 40963), (548, 37076), (598, 33976), (713, 28496), (806, 25208), (1096, 18538), (1196, 16988), (1426, 14248), (1612, 12604), (1781, 11408), (2192, 9269), (2392, 8494), (2852, 7124), (3151, 6448), (3224, 6302), (3562, 5704), (4247, 4784)]