21242910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54469}}^1$

素因数の和:54492

約数の個数: 32

約数和(自身を含む): 54905760

約数和(自身を除く): 33662850

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54469, 108938, 163407, 272345, 326814, 544690, 708097, 817035, 1416194, 1634070, 2124291, 3540485, 4248582, 7080970, 10621455, 21242910]

約数ペア:

[(1, 21242910), (2, 10621455), (3, 7080970), (5, 4248582), (6, 3540485), (10, 2124291), (13, 1634070), (15, 1416194), (26, 817035), (30, 708097), (39, 544690), (65, 326814), (78, 272345), (130, 163407), (195, 108938), (390, 54469)]