18969705

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 35262864

約数和(自身を除く): 16293159

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 137, 153, 181, 255, 411, 543, 685, 765, 905, 1233, 1629, 2055, 2329, 2715, 3077, 6165, 6987, 8145, 9231, 11645, 15385, 20961, 24797, 27693, 34935, 46155, 74391, 104805, 123985, 138465, 223173, 371955, 421549, 1115865, 1264647, 2107745, 3793941, 6323235, 18969705]

約数ペア:

[(1, 18969705), (3, 6323235), (5, 3793941), (9, 2107745), (15, 1264647), (17, 1115865), (45, 421549), (51, 371955), (85, 223173), (137, 138465), (153, 123985), (181, 104805), (255, 74391), (411, 46155), (543, 34935), (685, 27693), (765, 24797), (905, 20961), (1233, 15385), (1629, 11645), (2055, 9231), (2329, 8145), (2715, 6987), (3077, 6165)]