20181590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1283}}^1$

素因数の和:1325

約数の個数: 48

約数和(自身を含む): 43034544

約数和(自身を除く): 22852954

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 121, 130, 143, 242, 286, 605, 715, 1210, 1283, 1430, 1573, 2566, 3146, 6415, 7865, 12830, 14113, 15730, 16679, 28226, 33358, 70565, 83395, 141130, 155243, 166790, 183469, 310486, 366938, 776215, 917345, 1552430, 1834690, 2018159, 4036318, 10090795, 20181590]

約数ペア:

[(1, 20181590), (2, 10090795), (5, 4036318), (10, 2018159), (11, 1834690), (13, 1552430), (22, 917345), (26, 776215), (55, 366938), (65, 310486), (110, 183469), (121, 166790), (130, 155243), (143, 141130), (242, 83395), (286, 70565), (605, 33358), (715, 28226), (1210, 16679), (1283, 15730), (1430, 14113), (1573, 12830), (2566, 7865), (3146, 6415)]