31873725

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1$

素因数の和:687

約数の個数: 72

約数和(自身を含む): 65198952

約数和(自身を除く): 33325227

約数列:

[1, 3, 5, 9, 13, 15, 17, 25, 39, 45, 51, 65, 75, 85, 117, 153, 195, 221, 225, 255, 325, 425, 585, 641, 663, 765, 975, 1105, 1275, 1923, 1989, 2925, 3205, 3315, 3825, 5525, 5769, 8333, 9615, 9945, 10897, 16025, 16575, 24999, 28845, 32691, 41665, 48075, 49725, 54485, 74997, 98073, 124995, 141661, 144225, 163455, 208325, 272425, 374985, 424983, 490365, 624975, 708305, 817275, 1274949, 1874925, 2124915, 2451825, 3541525, 6374745, 10624575, 31873725]

約数ペア:

[(1, 31873725), (3, 10624575), (5, 6374745), (9, 3541525), (13, 2451825), (15, 2124915), (17, 1874925), (25, 1274949), (39, 817275), (45, 708305), (51, 624975), (65, 490365), (75, 424983), (85, 374985), (117, 272425), (153, 208325), (195, 163455), (221, 144225), (225, 141661), (255, 124995), (325, 98073), (425, 74997), (585, 54485), (641, 49725), (663, 48075), (765, 41665), (975, 32691), (1105, 28845), (1275, 24999), (1923, 16575), (1989, 16025), (2925, 10897), (3205, 9945), (3315, 9615), (3825, 8333), (5525, 5769)]