21742175

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 34997760

約数和(自身を除く): 13255585

約数列:

[1, 5, 7, 13, 19, 25, 35, 65, 91, 95, 133, 175, 247, 325, 455, 475, 503, 665, 1235, 1729, 2275, 2515, 3325, 3521, 6175, 6539, 8645, 9557, 12575, 17605, 32695, 43225, 45773, 47785, 66899, 88025, 124241, 163475, 228865, 238925, 334495, 621205, 869687, 1144325, 1672475, 3106025, 4348435, 21742175]

約数ペア:

[(1, 21742175), (5, 4348435), (7, 3106025), (13, 1672475), (19, 1144325), (25, 869687), (35, 621205), (65, 334495), (91, 238925), (95, 228865), (133, 163475), (175, 124241), (247, 88025), (325, 66899), (455, 47785), (475, 45773), (503, 43225), (665, 32695), (1235, 17605), (1729, 12575), (2275, 9557), (2515, 8645), (3325, 6539), (3521, 6175)]