20105540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11047}}^1$

素因数の和:11076

約数の個数: 48

約数和(自身を含む): 51969792

約数和(自身を除く): 31864252

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11047, 22094, 44188, 55235, 77329, 110470, 143611, 154658, 220940, 287222, 309316, 386645, 574444, 718055, 773290, 1005277, 1436110, 1546580, 2010554, 2872220, 4021108, 5026385, 10052770, 20105540]

約数ペア:

[(1, 20105540), (2, 10052770), (4, 5026385), (5, 4021108), (7, 2872220), (10, 2010554), (13, 1546580), (14, 1436110), (20, 1005277), (26, 773290), (28, 718055), (35, 574444), (52, 386645), (65, 309316), (70, 287222), (91, 220940), (130, 154658), (140, 143611), (182, 110470), (260, 77329), (364, 55235), (455, 44188), (910, 22094), (1820, 11047)]