81275460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193513}}^1$

素因数の和:193532

約数の個数: 48

約数和(自身を含む): 260082816

約数和(自身を除く): 178807356

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 193513, 387026, 580539, 774052, 967565, 1161078, 1354591, 1935130, 2322156, 2709182, 2902695, 3870260, 4063773, 5418364, 5805390, 6772955, 8127546, 11610780, 13545910, 16255092, 20318865, 27091820, 40637730, 81275460]

約数ペア:

[(1, 81275460), (2, 40637730), (3, 27091820), (4, 20318865), (5, 16255092), (6, 13545910), (7, 11610780), (10, 8127546), (12, 6772955), (14, 5805390), (15, 5418364), (20, 4063773), (21, 3870260), (28, 2902695), (30, 2709182), (35, 2322156), (42, 1935130), (60, 1354591), (70, 1161078), (84, 967565), (105, 774052), (140, 580539), (210, 387026), (420, 193513)]