21925155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 43296768

約数和(自身を除く): 21371613

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 71, 85, 105, 119, 173, 213, 255, 355, 357, 497, 519, 595, 865, 1065, 1207, 1211, 1491, 1785, 2485, 2595, 2941, 3621, 3633, 6035, 6055, 7455, 8449, 8823, 12283, 14705, 18105, 18165, 20587, 25347, 36849, 42245, 44115, 61415, 61761, 85981, 102935, 126735, 184245, 208811, 257943, 308805, 429905, 626433, 1044055, 1289715, 1461677, 3132165, 4385031, 7308385, 21925155]

約数ペア:

[(1, 21925155), (3, 7308385), (5, 4385031), (7, 3132165), (15, 1461677), (17, 1289715), (21, 1044055), (35, 626433), (51, 429905), (71, 308805), (85, 257943), (105, 208811), (119, 184245), (173, 126735), (213, 102935), (255, 85981), (355, 61761), (357, 61415), (497, 44115), (519, 42245), (595, 36849), (865, 25347), (1065, 20587), (1207, 18165), (1211, 18105), (1491, 14705), (1785, 12283), (2485, 8823), (2595, 8449), (2941, 7455), (3621, 6055), (3633, 6035)]