21032570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:375

約数の個数: 64

約数和(自身を含む): 44706816

約数和(自身を除く): 23674246

約数列:

[1, 2, 5, 10, 13, 17, 26, 31, 34, 62, 65, 85, 130, 155, 170, 221, 307, 310, 403, 442, 527, 614, 806, 1054, 1105, 1535, 2015, 2210, 2635, 3070, 3991, 4030, 5219, 5270, 6851, 7982, 9517, 10438, 13702, 19034, 19955, 26095, 34255, 39910, 47585, 52190, 67847, 68510, 95170, 123721, 135694, 161789, 247442, 323578, 339235, 618605, 678470, 808945, 1237210, 1617890, 2103257, 4206514, 10516285, 21032570]

約数ペア:

[(1, 21032570), (2, 10516285), (5, 4206514), (10, 2103257), (13, 1617890), (17, 1237210), (26, 808945), (31, 678470), (34, 618605), (62, 339235), (65, 323578), (85, 247442), (130, 161789), (155, 135694), (170, 123721), (221, 95170), (307, 68510), (310, 67847), (403, 52190), (442, 47585), (527, 39910), (614, 34255), (806, 26095), (1054, 19955), (1105, 19034), (1535, 13702), (2015, 10438), (2210, 9517), (2635, 7982), (3070, 6851), (3991, 5270), (4030, 5219)]