18855975

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:696

約数の個数: 48

約数和(自身を含む): 34497792

約数和(自身を除く): 15641817

約数列:

[1, 3, 5, 15, 17, 23, 25, 51, 69, 75, 85, 115, 255, 345, 391, 425, 575, 643, 1173, 1275, 1725, 1929, 1955, 3215, 5865, 9645, 9775, 10931, 14789, 16075, 29325, 32793, 44367, 48225, 54655, 73945, 163965, 221835, 251413, 273275, 369725, 754239, 819825, 1109175, 1257065, 3771195, 6285325, 18855975]

約数ペア:

[(1, 18855975), (3, 6285325), (5, 3771195), (15, 1257065), (17, 1109175), (23, 819825), (25, 754239), (51, 369725), (69, 273275), (75, 251413), (85, 221835), (115, 163965), (255, 73945), (345, 54655), (391, 48225), (425, 44367), (575, 32793), (643, 29325), (1173, 16075), (1275, 14789), (1725, 10931), (1929, 9775), (1955, 9645), (3215, 5865)]