21093532

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:366

約数の個数: 36

約数和(自身を含む): 39919824

約数和(自身を除く): 18826292

約数列:

[1, 2, 4, 17, 34, 68, 71, 142, 257, 284, 289, 514, 578, 1028, 1156, 1207, 2414, 4369, 4828, 8738, 17476, 18247, 20519, 36494, 41038, 72988, 74273, 82076, 148546, 297092, 310199, 620398, 1240796, 5273383, 10546766, 21093532]

約数ペア:

[(1, 21093532), (2, 10546766), (4, 5273383), (17, 1240796), (34, 620398), (68, 310199), (71, 297092), (142, 148546), (257, 82076), (284, 74273), (289, 72988), (514, 41038), (578, 36494), (1028, 20519), (1156, 18247), (1207, 17476), (2414, 8738), (4369, 4828)]