28421055

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2557}}^1$

素因数の和:2600

約数の個数: 48

約数和(自身を含む): 55866720

約数和(自身を除く): 27445665

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 2223, 2557, 3705, 7671, 11115, 12785, 23013, 33241, 38355, 48583, 99723, 115065, 145749, 166205, 242915, 299169, 437247, 498615, 631579, 728745, 1495845, 1894737, 2186235, 3157895, 5684211, 9473685, 28421055]

約数ペア:

[(1, 28421055), (3, 9473685), (5, 5684211), (9, 3157895), (13, 2186235), (15, 1894737), (19, 1495845), (39, 728745), (45, 631579), (57, 498615), (65, 437247), (95, 299169), (117, 242915), (171, 166205), (195, 145749), (247, 115065), (285, 99723), (585, 48583), (741, 38355), (855, 33241), (1235, 23013), (2223, 12785), (2557, 11115), (3705, 7671)]