780975

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:121

約数の個数: 48

約数和(自身を含む): 1562400

約数和(自身を除く): 781425

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 89, 117, 135, 195, 225, 267, 325, 351, 445, 585, 675, 801, 975, 1157, 1335, 1755, 2225, 2403, 2925, 3471, 4005, 5785, 6675, 8775, 10413, 12015, 17355, 20025, 28925, 31239, 52065, 60075, 86775, 156195, 260325, 780975]

約数ペア:

[(1, 780975), (3, 260325), (5, 156195), (9, 86775), (13, 60075), (15, 52065), (25, 31239), (27, 28925), (39, 20025), (45, 17355), (65, 12015), (75, 10413), (89, 8775), (117, 6675), (135, 5785), (195, 4005), (225, 3471), (267, 2925), (325, 2403), (351, 2225), (445, 1755), (585, 1335), (675, 1157), (801, 975)]