28211105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{431}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 10979935

約数列:

[1, 5, 13, 19, 53, 65, 95, 247, 265, 431, 689, 1007, 1235, 2155, 3445, 5035, 5603, 8189, 13091, 22843, 28015, 40945, 65455, 106457, 114215, 296959, 434017, 532285, 1484795, 2170085, 5642221, 28211105]

約数ペア:

[(1, 28211105), (5, 5642221), (13, 2170085), (19, 1484795), (53, 532285), (65, 434017), (95, 296959), (247, 114215), (265, 106457), (431, 65455), (689, 40945), (1007, 28015), (1235, 22843), (2155, 13091), (3445, 8189), (5035, 5603)]