28765425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 51816128

約数和(自身を除く): 23050703

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 163, 181, 195, 325, 489, 543, 815, 905, 975, 2119, 2353, 2445, 2715, 4075, 4525, 6357, 7059, 10595, 11765, 12225, 13575, 29503, 31785, 35295, 52975, 58825, 88509, 147515, 158925, 176475, 383539, 442545, 737575, 1150617, 1917695, 2212725, 5753085, 9588475, 28765425]

約数ペア:

[(1, 28765425), (3, 9588475), (5, 5753085), (13, 2212725), (15, 1917695), (25, 1150617), (39, 737575), (65, 442545), (75, 383539), (163, 176475), (181, 158925), (195, 147515), (325, 88509), (489, 58825), (543, 52975), (815, 35295), (905, 31785), (975, 29503), (2119, 13575), (2353, 12225), (2445, 11765), (2715, 10595), (4075, 7059), (4525, 6357)]