18996225

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 34069248

約数和(自身を除く): 15073023

約数列:

[1, 3, 5, 15, 17, 25, 47, 51, 75, 85, 141, 235, 255, 317, 425, 705, 799, 951, 1175, 1275, 1585, 2397, 3525, 3995, 4755, 5389, 7925, 11985, 14899, 16167, 19975, 23775, 26945, 44697, 59925, 74495, 80835, 134725, 223485, 253283, 372475, 404175, 759849, 1117425, 1266415, 3799245, 6332075, 18996225]

約数ペア:

[(1, 18996225), (3, 6332075), (5, 3799245), (15, 1266415), (17, 1117425), (25, 759849), (47, 404175), (51, 372475), (75, 253283), (85, 223485), (141, 134725), (235, 80835), (255, 74495), (317, 59925), (425, 44697), (705, 26945), (799, 23775), (951, 19975), (1175, 16167), (1275, 14899), (1585, 11985), (2397, 7925), (3525, 5389), (3995, 4755)]