21177585

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1097}}^1$

素因数の和:1135

約数の個数: 64

約数和(自身を含む): 44271360

約数和(自身を除く): 23093775

約数列:

[1, 3, 5, 9, 11, 13, 15, 27, 33, 39, 45, 55, 65, 99, 117, 135, 143, 165, 195, 297, 351, 429, 495, 585, 715, 1097, 1287, 1485, 1755, 2145, 3291, 3861, 5485, 6435, 9873, 12067, 14261, 16455, 19305, 29619, 36201, 42783, 49365, 60335, 71305, 108603, 128349, 148095, 156871, 181005, 213915, 325809, 385047, 470613, 543015, 641745, 784355, 1411839, 1629045, 1925235, 2353065, 4235517, 7059195, 21177585]

約数ペア:

[(1, 21177585), (3, 7059195), (5, 4235517), (9, 2353065), (11, 1925235), (13, 1629045), (15, 1411839), (27, 784355), (33, 641745), (39, 543015), (45, 470613), (55, 385047), (65, 325809), (99, 213915), (117, 181005), (135, 156871), (143, 148095), (165, 128349), (195, 108603), (297, 71305), (351, 60335), (429, 49365), (495, 42783), (585, 36201), (715, 29619), (1097, 19305), (1287, 16455), (1485, 14261), (1755, 12067), (2145, 9873), (3291, 6435), (3861, 5485)]