247920920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1553}}^1$

素因数の和:1884

約数の個数: 64

約数和(自身を含む): 603076320

約数和(自身を除く): 355155400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 307, 520, 614, 1228, 1535, 1553, 2456, 3070, 3106, 3991, 6140, 6212, 7765, 7982, 12280, 12424, 15530, 15964, 19955, 20189, 31060, 31928, 39910, 40378, 62120, 79820, 80756, 100945, 159640, 161512, 201890, 403780, 476771, 807560, 953542, 1907084, 2383855, 3814168, 4767710, 6198023, 9535420, 12396046, 19070840, 24792092, 30990115, 49584184, 61980230, 123960460, 247920920]

約数ペア:

[(1, 247920920), (2, 123960460), (4, 61980230), (5, 49584184), (8, 30990115), (10, 24792092), (13, 19070840), (20, 12396046), (26, 9535420), (40, 6198023), (52, 4767710), (65, 3814168), (104, 2383855), (130, 1907084), (260, 953542), (307, 807560), (520, 476771), (614, 403780), (1228, 201890), (1535, 161512), (1553, 159640), (2456, 100945), (3070, 80756), (3106, 79820), (3991, 62120), (6140, 40378), (6212, 39910), (7765, 31928), (7982, 31060), (12280, 20189), (12424, 19955), (15530, 15964)]