648215175

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{313}}^1\times {\mathrm{521}}^1$

素因数の和:900

約数の個数: 48

約数和(自身を含む): 1097527968

約数和(自身を除く): 449312793

約数列:

[1, 3, 5, 15, 25, 53, 75, 159, 265, 313, 521, 795, 939, 1325, 1563, 1565, 2605, 3975, 4695, 7815, 7825, 13025, 16589, 23475, 27613, 39075, 49767, 82839, 82945, 138065, 163073, 248835, 414195, 414725, 489219, 690325, 815365, 1244175, 2070975, 2446095, 4076825, 8642869, 12230475, 25928607, 43214345, 129643035, 216071725, 648215175]

約数ペア:

[(1, 648215175), (3, 216071725), (5, 129643035), (15, 43214345), (25, 25928607), (53, 12230475), (75, 8642869), (159, 4076825), (265, 2446095), (313, 2070975), (521, 1244175), (795, 815365), (939, 690325), (1325, 489219), (1563, 414725), (1565, 414195), (2605, 248835), (3975, 163073), (4695, 138065), (7815, 82945), (7825, 82839), (13025, 49767), (16589, 39075), (23475, 27613)]