20456145

素因数分解:

$3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{953}}^1$

素因数の和:1023

約数の個数: 40

約数和(自身を含む): 37400616

約数和(自身を除く): 16944471

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 135, 159, 265, 405, 477, 795, 953, 1431, 2385, 2859, 4293, 4765, 7155, 8577, 14295, 21465, 25731, 42885, 50509, 77193, 128655, 151527, 252545, 385965, 454581, 757635, 1363743, 2272905, 4091229, 6818715, 20456145]

約数ペア:

[(1, 20456145), (3, 6818715), (5, 4091229), (9, 2272905), (15, 1363743), (27, 757635), (45, 454581), (53, 385965), (81, 252545), (135, 151527), (159, 128655), (265, 77193), (405, 50509), (477, 42885), (795, 25731), (953, 21465), (1431, 14295), (2385, 8577), (2859, 7155), (4293, 4765)]