255057140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{51631}}^1$

素因数の和:51672

約数の個数: 48

約数和(自身を含む): 607192320

約数和(自身を除く): 352135180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 51631, 103262, 206524, 258155, 516310, 671203, 980989, 1032620, 1342406, 1961978, 2684812, 3356015, 3923956, 4904945, 6712030, 9809890, 12752857, 13424060, 19619780, 25505714, 51011428, 63764285, 127528570, 255057140]

約数ペア:

[(1, 255057140), (2, 127528570), (4, 63764285), (5, 51011428), (10, 25505714), (13, 19619780), (19, 13424060), (20, 12752857), (26, 9809890), (38, 6712030), (52, 4904945), (65, 3923956), (76, 3356015), (95, 2684812), (130, 1961978), (190, 1342406), (247, 1032620), (260, 980989), (380, 671203), (494, 516310), (988, 258155), (1235, 206524), (2470, 103262), (4940, 51631)]