219991725

素因数分解:

$3^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:427

約数の個数: 72

約数和(自身を含む): 409473792

約数和(自身を除く): 189482067

約数列:

[1, 3, 5, 9, 15, 25, 45, 47, 71, 75, 141, 213, 225, 235, 293, 355, 423, 639, 705, 879, 1065, 1175, 1465, 1775, 2115, 2637, 3195, 3337, 3525, 4395, 5325, 7325, 10011, 10575, 13185, 13771, 15975, 16685, 20803, 21975, 30033, 41313, 50055, 62409, 65925, 68855, 83425, 104015, 123939, 150165, 187227, 206565, 250275, 312045, 344275, 520075, 619695, 750825, 936135, 977741, 1032825, 1560225, 2933223, 3098475, 4680675, 4888705, 8799669, 14666115, 24443525, 43998345, 73330575, 219991725]

約数ペア:

[(1, 219991725), (3, 73330575), (5, 43998345), (9, 24443525), (15, 14666115), (25, 8799669), (45, 4888705), (47, 4680675), (71, 3098475), (75, 2933223), (141, 1560225), (213, 1032825), (225, 977741), (235, 936135), (293, 750825), (355, 619695), (423, 520075), (639, 344275), (705, 312045), (879, 250275), (1065, 206565), (1175, 187227), (1465, 150165), (1775, 123939), (2115, 104015), (2637, 83425), (3195, 68855), (3337, 65925), (3525, 62409), (4395, 50055), (5325, 41313), (7325, 30033), (10011, 21975), (10575, 20803), (13185, 16685), (13771, 15975)]