19709456

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:268

約数の個数: 60

約数和(自身を含む): 42683652

約数和(自身を除く): 22974196

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 169, 197, 208, 296, 338, 394, 481, 592, 676, 788, 962, 1352, 1576, 1924, 2561, 2704, 3152, 3848, 5122, 6253, 7289, 7696, 10244, 12506, 14578, 20488, 25012, 29156, 33293, 40976, 50024, 58312, 66586, 94757, 100048, 116624, 133172, 189514, 266344, 379028, 532688, 758056, 1231841, 1516112, 2463682, 4927364, 9854728, 19709456]

約数ペア:

[(1, 19709456), (2, 9854728), (4, 4927364), (8, 2463682), (13, 1516112), (16, 1231841), (26, 758056), (37, 532688), (52, 379028), (74, 266344), (104, 189514), (148, 133172), (169, 116624), (197, 100048), (208, 94757), (296, 66586), (338, 58312), (394, 50024), (481, 40976), (592, 33293), (676, 29156), (788, 25012), (962, 20488), (1352, 14578), (1576, 12506), (1924, 10244), (2561, 7696), (2704, 7289), (3152, 6253), (3848, 5122)]