21093975

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{227}}^1$

素因数の和:309

約数の個数: 72

約数和(自身を含む): 44104320

約数和(自身を除く): 23010345

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 59, 63, 75, 105, 175, 177, 225, 227, 295, 315, 413, 525, 531, 681, 885, 1135, 1239, 1475, 1575, 1589, 2043, 2065, 2655, 3405, 3717, 4425, 4767, 5675, 6195, 7945, 10215, 10325, 13275, 13393, 14301, 17025, 18585, 23835, 30975, 39725, 40179, 51075, 66965, 71505, 92925, 93751, 119175, 120537, 200895, 281253, 334825, 357525, 468755, 602685, 843759, 1004475, 1406265, 2343775, 3013425, 4218795, 7031325, 21093975]

約数ペア:

[(1, 21093975), (3, 7031325), (5, 4218795), (7, 3013425), (9, 2343775), (15, 1406265), (21, 1004475), (25, 843759), (35, 602685), (45, 468755), (59, 357525), (63, 334825), (75, 281253), (105, 200895), (175, 120537), (177, 119175), (225, 93751), (227, 92925), (295, 71505), (315, 66965), (413, 51075), (525, 40179), (531, 39725), (681, 30975), (885, 23835), (1135, 18585), (1239, 17025), (1475, 14301), (1575, 13393), (1589, 13275), (2043, 10325), (2065, 10215), (2655, 7945), (3405, 6195), (3717, 5675), (4425, 4767)]