28293785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 10026343

約数列:

[1, 5, 13, 43, 53, 65, 191, 215, 265, 559, 689, 955, 2279, 2483, 2795, 3445, 8213, 10123, 11395, 12415, 29627, 41065, 50615, 106769, 131599, 148135, 435289, 533845, 657995, 2176445, 5658757, 28293785]

約数ペア:

[(1, 28293785), (5, 5658757), (13, 2176445), (43, 657995), (53, 533845), (65, 435289), (191, 148135), (215, 131599), (265, 106769), (559, 50615), (689, 41065), (955, 29627), (2279, 12415), (2483, 11395), (2795, 10123), (3445, 8213)]