77978020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{727}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 170247168

約数和(自身を除く): 92269148

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 173, 310, 346, 620, 692, 727, 865, 1454, 1730, 2908, 3460, 3635, 5363, 7270, 10726, 14540, 21452, 22537, 26815, 45074, 53630, 90148, 107260, 112685, 125771, 225370, 251542, 450740, 503084, 628855, 1257710, 2515420, 3898901, 7797802, 15595604, 19494505, 38989010, 77978020]

約数ペア:

[(1, 77978020), (2, 38989010), (4, 19494505), (5, 15595604), (10, 7797802), (20, 3898901), (31, 2515420), (62, 1257710), (124, 628855), (155, 503084), (173, 450740), (310, 251542), (346, 225370), (620, 125771), (692, 112685), (727, 107260), (865, 90148), (1454, 53630), (1730, 45074), (2908, 26815), (3460, 22537), (3635, 21452), (5363, 14540), (7270, 10726)]