15678901225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^2$

素因数の和:415

約数の個数: 72

約数和(自身を含む): 22000357512

約数和(自身を除く): 6321456287

約数列:

[1, 5, 13, 25, 41, 53, 65, 149, 205, 265, 325, 533, 689, 745, 1025, 1325, 1937, 2173, 2665, 3445, 3725, 6109, 7897, 9685, 10865, 13325, 17225, 22201, 28249, 30545, 39485, 48425, 54325, 79417, 102661, 111005, 141245, 152725, 197425, 288613, 323777, 397085, 513305, 555025, 706225, 910241, 1176653, 1443065, 1618885, 1985425, 2566525, 4209101, 4551205, 5883265, 7215325, 8094425, 11833133, 15296489, 21045505, 22756025, 29416325, 48242773, 59165665, 76482445, 105227525, 241213865, 295828325, 382412225, 627156049, 1206069325, 3135780245, 15678901225]

約数ペア:

[(1, 15678901225), (5, 3135780245), (13, 1206069325), (25, 627156049), (41, 382412225), (53, 295828325), (65, 241213865), (149, 105227525), (205, 76482445), (265, 59165665), (325, 48242773), (533, 29416325), (689, 22756025), (745, 21045505), (1025, 15296489), (1325, 11833133), (1937, 8094425), (2173, 7215325), (2665, 5883265), (3445, 4551205), (3725, 4209101), (6109, 2566525), (7897, 1985425), (9685, 1618885), (10865, 1443065), (13325, 1176653), (17225, 910241), (22201, 706225), (28249, 555025), (30545, 513305), (39485, 397085), (48425, 323777), (54325, 288613), (79417, 197425), (102661, 152725), (111005, 141245)]