21352920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1663}}^1$

素因数の和:1784

約数の個数: 64

約数和(自身を含む): 64696320

約数和(自身を除く): 43343400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 107, 120, 214, 321, 428, 535, 642, 856, 1070, 1284, 1605, 1663, 2140, 2568, 3210, 3326, 4280, 4989, 6420, 6652, 8315, 9978, 12840, 13304, 16630, 19956, 24945, 33260, 39912, 49890, 66520, 99780, 177941, 199560, 355882, 533823, 711764, 889705, 1067646, 1423528, 1779410, 2135292, 2669115, 3558820, 4270584, 5338230, 7117640, 10676460, 21352920]

約数ペア:

[(1, 21352920), (2, 10676460), (3, 7117640), (4, 5338230), (5, 4270584), (6, 3558820), (8, 2669115), (10, 2135292), (12, 1779410), (15, 1423528), (20, 1067646), (24, 889705), (30, 711764), (40, 533823), (60, 355882), (107, 199560), (120, 177941), (214, 99780), (321, 66520), (428, 49890), (535, 39912), (642, 33260), (856, 24945), (1070, 19956), (1284, 16630), (1605, 13304), (1663, 12840), (2140, 9978), (2568, 8315), (3210, 6652), (3326, 6420), (4280, 4989)]