12990975

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 23784192

約数和(自身を除く): 10793217

約数列:

[1, 3, 5, 15, 17, 23, 25, 51, 69, 75, 85, 115, 255, 345, 391, 425, 443, 575, 1173, 1275, 1329, 1725, 1955, 2215, 5865, 6645, 7531, 9775, 10189, 11075, 22593, 29325, 30567, 33225, 37655, 50945, 112965, 152835, 173213, 188275, 254725, 519639, 564825, 764175, 866065, 2598195, 4330325, 12990975]

約数ペア:

[(1, 12990975), (3, 4330325), (5, 2598195), (15, 866065), (17, 764175), (23, 564825), (25, 519639), (51, 254725), (69, 188275), (75, 173213), (85, 152835), (115, 112965), (255, 50945), (345, 37655), (391, 33225), (425, 30567), (443, 29325), (575, 22593), (1173, 11075), (1275, 10189), (1329, 9775), (1725, 7531), (1955, 6645), (2215, 5865)]