20552025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 37122624

約数和(自身を除く): 16570599

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 107, 195, 197, 321, 325, 535, 591, 975, 985, 1391, 1605, 2561, 2675, 2955, 4173, 4925, 6955, 7683, 8025, 12805, 14775, 20865, 21079, 34775, 38415, 63237, 64025, 104325, 105395, 192075, 274027, 316185, 526975, 822081, 1370135, 1580925, 4110405, 6850675, 20552025]

約数ペア:

[(1, 20552025), (3, 6850675), (5, 4110405), (13, 1580925), (15, 1370135), (25, 822081), (39, 526975), (65, 316185), (75, 274027), (107, 192075), (195, 105395), (197, 104325), (321, 64025), (325, 63237), (535, 38415), (591, 34775), (975, 21079), (985, 20865), (1391, 14775), (1605, 12805), (2561, 8025), (2675, 7683), (2955, 6955), (4173, 4925)]