20912520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7577}}^1$

素因数の和:7614

約数の個数: 64

約数和(自身を含む): 65473920

約数和(自身を除く): 44561400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 7577, 15154, 22731, 30308, 37885, 45462, 60616, 75770, 90924, 113655, 151540, 174271, 181848, 227310, 303080, 348542, 454620, 522813, 697084, 871355, 909240, 1045626, 1394168, 1742710, 2091252, 2614065, 3485420, 4182504, 5228130, 6970840, 10456260, 20912520]

約数ペア:

[(1, 20912520), (2, 10456260), (3, 6970840), (4, 5228130), (5, 4182504), (6, 3485420), (8, 2614065), (10, 2091252), (12, 1742710), (15, 1394168), (20, 1045626), (23, 909240), (24, 871355), (30, 697084), (40, 522813), (46, 454620), (60, 348542), (69, 303080), (92, 227310), (115, 181848), (120, 174271), (138, 151540), (184, 113655), (230, 90924), (276, 75770), (345, 60616), (460, 45462), (552, 37885), (690, 30308), (920, 22731), (1380, 15154), (2760, 7577)]