21694440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{347}}^1\times {\mathrm{521}}^1$

素因数の和:882

約数の個数: 64

約数和(自身を含む): 65396160

約数和(自身を除く): 43701720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 347, 521, 694, 1041, 1042, 1388, 1563, 1735, 2082, 2084, 2605, 2776, 3126, 3470, 4164, 4168, 5205, 5210, 6252, 6940, 7815, 8328, 10410, 10420, 12504, 13880, 15630, 20820, 20840, 31260, 41640, 62520, 180787, 361574, 542361, 723148, 903935, 1084722, 1446296, 1807870, 2169444, 2711805, 3615740, 4338888, 5423610, 7231480, 10847220, 21694440]

約数ペア:

[(1, 21694440), (2, 10847220), (3, 7231480), (4, 5423610), (5, 4338888), (6, 3615740), (8, 2711805), (10, 2169444), (12, 1807870), (15, 1446296), (20, 1084722), (24, 903935), (30, 723148), (40, 542361), (60, 361574), (120, 180787), (347, 62520), (521, 41640), (694, 31260), (1041, 20840), (1042, 20820), (1388, 15630), (1563, 13880), (1735, 12504), (2082, 10420), (2084, 10410), (2605, 8328), (2776, 7815), (3126, 6940), (3470, 6252), (4164, 5210), (4168, 5205)]