19775055

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 34891776

約数和(自身を除く): 15116721

約数列:

[1, 3, 5, 15, 23, 31, 43, 69, 93, 115, 129, 155, 215, 345, 465, 645, 713, 989, 1333, 1849, 2139, 2967, 3565, 3999, 4945, 5547, 6665, 9245, 10695, 14835, 19995, 27735, 30659, 42527, 57319, 91977, 127581, 153295, 171957, 212635, 286595, 459885, 637905, 859785, 1318337, 3955011, 6591685, 19775055]

約数ペア:

[(1, 19775055), (3, 6591685), (5, 3955011), (15, 1318337), (23, 859785), (31, 637905), (43, 459885), (69, 286595), (93, 212635), (115, 171957), (129, 153295), (155, 127581), (215, 91977), (345, 57319), (465, 42527), (645, 30659), (713, 27735), (989, 19995), (1333, 14835), (1849, 10695), (2139, 9245), (2967, 6665), (3565, 5547), (3999, 4945)]