20703735

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 19938825

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 47, 65, 117, 135, 141, 195, 235, 251, 351, 423, 585, 611, 705, 753, 1255, 1269, 1755, 1833, 2115, 2259, 3055, 3263, 3765, 5499, 6345, 6777, 9165, 9789, 11295, 11797, 16315, 16497, 27495, 29367, 33885, 35391, 48945, 58985, 82485, 88101, 106173, 146835, 153361, 176955, 318519, 440505, 460083, 530865, 766805, 1380249, 1592595, 2300415, 4140747, 6901245, 20703735]

約数ペア:

[(1, 20703735), (3, 6901245), (5, 4140747), (9, 2300415), (13, 1592595), (15, 1380249), (27, 766805), (39, 530865), (45, 460083), (47, 440505), (65, 318519), (117, 176955), (135, 153361), (141, 146835), (195, 106173), (235, 88101), (251, 82485), (351, 58985), (423, 48945), (585, 35391), (611, 33885), (705, 29367), (753, 27495), (1255, 16497), (1269, 16315), (1755, 11797), (1833, 11295), (2115, 9789), (2259, 9165), (3055, 6777), (3263, 6345), (3765, 5499)]