20571525

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{541}}^1$

素因数の和:583

約数の個数: 54

約数和(自身を含む): 39971958

約数和(自身を除く): 19400433

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 169, 195, 225, 325, 507, 541, 585, 845, 975, 1521, 1623, 2535, 2705, 2925, 4225, 4869, 7033, 7605, 8115, 12675, 13525, 21099, 24345, 35165, 38025, 40575, 63297, 91429, 105495, 121725, 175825, 274287, 316485, 457145, 527475, 822861, 1371435, 1582425, 2285725, 4114305, 6857175, 20571525]

約数ペア:

[(1, 20571525), (3, 6857175), (5, 4114305), (9, 2285725), (13, 1582425), (15, 1371435), (25, 822861), (39, 527475), (45, 457145), (65, 316485), (75, 274287), (117, 175825), (169, 121725), (195, 105495), (225, 91429), (325, 63297), (507, 40575), (541, 38025), (585, 35165), (845, 24345), (975, 21099), (1521, 13525), (1623, 12675), (2535, 8115), (2705, 7605), (2925, 7033), (4225, 4869)]