21671175

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{739}}^1$

素因数の和:792

約数の個数: 48

約数和(自身を含む): 39640320

約数和(自身を除く): 17969145

約数列:

[1, 3, 5, 15, 17, 23, 25, 51, 69, 75, 85, 115, 255, 345, 391, 425, 575, 739, 1173, 1275, 1725, 1955, 2217, 3695, 5865, 9775, 11085, 12563, 16997, 18475, 29325, 37689, 50991, 55425, 62815, 84985, 188445, 254955, 288949, 314075, 424925, 866847, 942225, 1274775, 1444745, 4334235, 7223725, 21671175]

約数ペア:

[(1, 21671175), (3, 7223725), (5, 4334235), (15, 1444745), (17, 1274775), (23, 942225), (25, 866847), (51, 424925), (69, 314075), (75, 288949), (85, 254955), (115, 188445), (255, 84985), (345, 62815), (391, 55425), (425, 50991), (575, 37689), (739, 29325), (1173, 18475), (1275, 16997), (1725, 12563), (1955, 11085), (2217, 9775), (3695, 5865)]