20929792

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 47502560

約数和(自身を除く): 26572768

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 128, 152, 208, 247, 256, 304, 331, 416, 494, 608, 662, 832, 988, 1216, 1324, 1664, 1976, 2432, 2648, 3328, 3952, 4303, 4864, 5296, 6289, 7904, 8606, 10592, 12578, 15808, 17212, 21184, 25156, 31616, 34424, 42368, 50312, 63232, 68848, 81757, 84736, 100624, 137696, 163514, 201248, 275392, 327028, 402496, 550784, 654056, 804992, 1101568, 1308112, 1609984, 2616224, 5232448, 10464896, 20929792]

約数ペア:

[(1, 20929792), (2, 10464896), (4, 5232448), (8, 2616224), (13, 1609984), (16, 1308112), (19, 1101568), (26, 804992), (32, 654056), (38, 550784), (52, 402496), (64, 327028), (76, 275392), (104, 201248), (128, 163514), (152, 137696), (208, 100624), (247, 84736), (256, 81757), (304, 68848), (331, 63232), (416, 50312), (494, 42368), (608, 34424), (662, 31616), (832, 25156), (988, 21184), (1216, 17212), (1324, 15808), (1664, 12578), (1976, 10592), (2432, 8606), (2648, 7904), (3328, 6289), (3952, 5296), (4303, 4864)]