21344120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2459}}^1$

素因数の和:2508

約数の個数: 64

約数和(自身を含む): 56678400

約数和(自身を除く): 35334280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2459, 4340, 4918, 8680, 9836, 12295, 17213, 19672, 24590, 34426, 49180, 68852, 76229, 86065, 98360, 137704, 152458, 172130, 304916, 344260, 381145, 533603, 609832, 688520, 762290, 1067206, 1524580, 2134412, 2668015, 3049160, 4268824, 5336030, 10672060, 21344120]

約数ペア:

[(1, 21344120), (2, 10672060), (4, 5336030), (5, 4268824), (7, 3049160), (8, 2668015), (10, 2134412), (14, 1524580), (20, 1067206), (28, 762290), (31, 688520), (35, 609832), (40, 533603), (56, 381145), (62, 344260), (70, 304916), (124, 172130), (140, 152458), (155, 137704), (217, 98360), (248, 86065), (280, 76229), (310, 68852), (434, 49180), (620, 34426), (868, 24590), (1085, 19672), (1240, 17213), (1736, 12295), (2170, 9836), (2459, 8680), (4340, 4918)]