20045480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5507}}^1$

素因数の和:5538

約数の個数: 64

約数和(自身を含む): 55520640

約数和(自身を除く): 35475160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5507, 11014, 22028, 27535, 38549, 44056, 55070, 71591, 77098, 110140, 143182, 154196, 192745, 220280, 286364, 308392, 357955, 385490, 501137, 572728, 715910, 770980, 1002274, 1431820, 1541960, 2004548, 2505685, 2863640, 4009096, 5011370, 10022740, 20045480]

約数ペア:

[(1, 20045480), (2, 10022740), (4, 5011370), (5, 4009096), (7, 2863640), (8, 2505685), (10, 2004548), (13, 1541960), (14, 1431820), (20, 1002274), (26, 770980), (28, 715910), (35, 572728), (40, 501137), (52, 385490), (56, 357955), (65, 308392), (70, 286364), (91, 220280), (104, 192745), (130, 154196), (140, 143182), (182, 110140), (260, 77098), (280, 71591), (364, 55070), (455, 44056), (520, 38549), (728, 27535), (910, 22028), (1820, 11014), (3640, 5507)]