21000474615

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1\times {\mathrm{7309}}^1$

素因数の和:7552

約数の個数: 64

約数和(自身を含む): 35840286720

約数和(自身を除く): 14839812105

約数列:

[1, 3, 5, 15, 31, 37, 93, 111, 155, 167, 185, 465, 501, 555, 835, 1147, 2505, 3441, 5177, 5735, 6179, 7309, 15531, 17205, 18537, 21927, 25885, 30895, 36545, 77655, 92685, 109635, 191549, 226579, 270433, 574647, 679737, 811299, 957745, 1132895, 1220603, 1352165, 2873235, 3398685, 3661809, 4056495, 6103015, 8383423, 18309045, 25150269, 37838693, 41917115, 45162311, 113516079, 125751345, 135486933, 189193465, 225811555, 567580395, 677434665, 1400031641, 4200094923, 7000158205, 21000474615]

約数ペア:

[(1, 21000474615), (3, 7000158205), (5, 4200094923), (15, 1400031641), (31, 677434665), (37, 567580395), (93, 225811555), (111, 189193465), (155, 135486933), (167, 125751345), (185, 113516079), (465, 45162311), (501, 41917115), (555, 37838693), (835, 25150269), (1147, 18309045), (2505, 8383423), (3441, 6103015), (5177, 4056495), (5735, 3661809), (6179, 3398685), (7309, 2873235), (15531, 1352165), (17205, 1220603), (18537, 1132895), (21927, 957745), (25885, 811299), (30895, 679737), (36545, 574647), (77655, 270433), (92685, 226579), (109635, 191549)]