20031975

素因数分解:

$3^3\times 5^2\times {\mathrm{59}}^1\times {\mathrm{503}}^1$

素因数の和:581

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 17465625

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 59, 75, 135, 177, 225, 295, 503, 531, 675, 885, 1475, 1509, 1593, 2515, 2655, 4425, 4527, 7545, 7965, 12575, 13275, 13581, 22635, 29677, 37725, 39825, 67905, 89031, 113175, 148385, 267093, 339525, 445155, 741925, 801279, 1335465, 2225775, 4006395, 6677325, 20031975]

約数ペア:

[(1, 20031975), (3, 6677325), (5, 4006395), (9, 2225775), (15, 1335465), (25, 801279), (27, 741925), (45, 445155), (59, 339525), (75, 267093), (135, 148385), (177, 113175), (225, 89031), (295, 67905), (503, 39825), (531, 37725), (675, 29677), (885, 22635), (1475, 13581), (1509, 13275), (1593, 12575), (2515, 7965), (2655, 7545), (4425, 4527)]