391267120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157769}}^1$

素因数の和:157813

約数の個数: 40

約数和(自身を含む): 939047040

約数和(自身を除く): 547779920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 157769, 315538, 631076, 788845, 1262152, 1577690, 2524304, 3155380, 4890839, 6310760, 9781678, 12621520, 19563356, 24454195, 39126712, 48908390, 78253424, 97816780, 195633560, 391267120]

約数ペア:

[(1, 391267120), (2, 195633560), (4, 97816780), (5, 78253424), (8, 48908390), (10, 39126712), (16, 24454195), (20, 19563356), (31, 12621520), (40, 9781678), (62, 6310760), (80, 4890839), (124, 3155380), (155, 2524304), (248, 1577690), (310, 1262152), (496, 788845), (620, 631076), (1240, 315538), (2480, 157769)]