987472980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421997}}^1$

素因数の和:422025

約数の個数: 72

約数和(自身を含む): 3225752712

約数和(自身を除く): 2238279732

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 421997, 843994, 1265991, 1687988, 2109985, 2531982, 3797973, 4219970, 5063964, 5485961, 6329955, 7595946, 8439940, 10971922, 12659910, 15191892, 16457883, 18989865, 21943844, 25319820, 27429805, 32915766, 37979730, 49373649, 54859610, 65831532, 75959460, 82289415, 98747298, 109719220, 164578830, 197494596, 246868245, 329157660, 493736490, 987472980]

約数ペア:

[(1, 987472980), (2, 493736490), (3, 329157660), (4, 246868245), (5, 197494596), (6, 164578830), (9, 109719220), (10, 98747298), (12, 82289415), (13, 75959460), (15, 65831532), (18, 54859610), (20, 49373649), (26, 37979730), (30, 32915766), (36, 27429805), (39, 25319820), (45, 21943844), (52, 18989865), (60, 16457883), (65, 15191892), (78, 12659910), (90, 10971922), (117, 8439940), (130, 7595946), (156, 6329955), (180, 5485961), (195, 5063964), (234, 4219970), (260, 3797973), (390, 2531982), (468, 2109985), (585, 1687988), (780, 1265991), (1170, 843994), (2340, 421997)]