28638285

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 53561088

約数和(自身を除く): 24922803

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 53, 65, 85, 159, 163, 195, 221, 255, 265, 489, 663, 689, 795, 815, 901, 1105, 2067, 2119, 2445, 2703, 2771, 3315, 3445, 4505, 6357, 8313, 8639, 10335, 10595, 11713, 13515, 13855, 25917, 31785, 35139, 36023, 41565, 43195, 58565, 108069, 112307, 129585, 146863, 175695, 180115, 336921, 440589, 540345, 561535, 734315, 1684605, 1909219, 2202945, 5727657, 9546095, 28638285]

約数ペア:

[(1, 28638285), (3, 9546095), (5, 5727657), (13, 2202945), (15, 1909219), (17, 1684605), (39, 734315), (51, 561535), (53, 540345), (65, 440589), (85, 336921), (159, 180115), (163, 175695), (195, 146863), (221, 129585), (255, 112307), (265, 108069), (489, 58565), (663, 43195), (689, 41565), (795, 36023), (815, 35139), (901, 31785), (1105, 25917), (2067, 13855), (2119, 13515), (2445, 11713), (2703, 10595), (2771, 10335), (3315, 8639), (3445, 8313), (4505, 6357)]