21180585

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^2\times {\mathrm{73}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 37125504

約数和(自身を除く): 15944919

約数列:

[1, 3, 5, 15, 23, 29, 69, 73, 87, 115, 145, 219, 345, 365, 435, 667, 841, 1095, 1679, 2001, 2117, 2523, 3335, 4205, 5037, 6351, 8395, 10005, 10585, 12615, 19343, 25185, 31755, 48691, 58029, 61393, 96715, 146073, 184179, 243455, 290145, 306965, 730365, 920895, 1412039, 4236117, 7060195, 21180585]

約数ペア:

[(1, 21180585), (3, 7060195), (5, 4236117), (15, 1412039), (23, 920895), (29, 730365), (69, 306965), (73, 290145), (87, 243455), (115, 184179), (145, 146073), (219, 96715), (345, 61393), (365, 58029), (435, 48691), (667, 31755), (841, 25185), (1095, 19343), (1679, 12615), (2001, 10585), (2117, 10005), (2523, 8395), (3335, 6351), (4205, 5037)]