55400720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:384

約数の個数: 80

約数和(自身を含む): 134991360

約数和(自身を除く): 79590640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 89, 124, 155, 178, 248, 251, 310, 356, 445, 496, 502, 620, 712, 890, 1004, 1240, 1255, 1424, 1780, 2008, 2480, 2510, 2759, 3560, 4016, 5020, 5518, 7120, 7781, 10040, 11036, 13795, 15562, 20080, 22072, 22339, 27590, 31124, 38905, 44144, 44678, 55180, 62248, 77810, 89356, 110360, 111695, 124496, 155620, 178712, 220720, 223390, 311240, 357424, 446780, 622480, 692509, 893560, 1385018, 1787120, 2770036, 3462545, 5540072, 6925090, 11080144, 13850180, 27700360, 55400720]

約数ペア:

[(1, 55400720), (2, 27700360), (4, 13850180), (5, 11080144), (8, 6925090), (10, 5540072), (16, 3462545), (20, 2770036), (31, 1787120), (40, 1385018), (62, 893560), (80, 692509), (89, 622480), (124, 446780), (155, 357424), (178, 311240), (248, 223390), (251, 220720), (310, 178712), (356, 155620), (445, 124496), (496, 111695), (502, 110360), (620, 89356), (712, 77810), (890, 62248), (1004, 55180), (1240, 44678), (1255, 44144), (1424, 38905), (1780, 31124), (2008, 27590), (2480, 22339), (2510, 22072), (2759, 20080), (3560, 15562), (4016, 13795), (5020, 11036), (5518, 10040), (7120, 7781)]